# Percentage Calculator

What is % of ? choose : WHAT is P % of X ? Y is WHAT percentage of X ? Y is P % of WHAT ? WHAT % of X is Y ? P % of WHAT is Y ? P % of X is WHAT ? Y out of WHAT is P % ? WHAT out of X is P % ? Y out of ten is WHAT % ? ten plus P % is WHAT ? ten plus WHAT % is Y ? WHAT plus P % is Y ? X minus P % is WHAT ? X minus WHAT % is Y ? WHAT minus P % is Y ?

## Calculator Use

Find a percentage or work out the share given numbers and percentage values. Use percentage formulas to figure out percentages and unknowns in equations. Add or subtract a share from a issue or solve the equations.

## How to Calculate Percentages

There are many formulas for percentage problems. You can think of the most basic as X/Y = P x 100. The formula below are all mathematical variations of this formula .
Let ‘s explore the three basic share problems. adam and Y are numbers and P is the share :

1. Find P percent of X
2. Find what percent of X is Y
3. Find X if P percent of it is Y

## 1. How to calculate percentage of a number. Use the percentage formula: P% * X = Y

exercise : What is 10 % of 150 ?

• Convert the problem to an equation using the percentage formula: P% * X = Y
• P is 10%, X is 150, so the equation is 10% * 150 = Y
• Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10
• Substitute 0.10 for 10% in the equation: 10% * 150 = Y becomes 0.10 * 150 = Y
• Do the math: 0.10 * 150 = 15
• Y = 15
• So 10% of 150 is 15
• Double check your answer with the original question: What is 10% of 150? Multiply 0.10 * 150 =
15

## 2. How to find what percent of X is Y. Use the percentage formula: Y/X = P%

example : What percentage of 60 is 12 ?

• Convert the problem to an equation using the percentage formula: Y/X = P%
• X is 60, Y is 12, so the equation is 12/60 = P%
• Do the math: 12/60 = 0.20
• Important! The result will always be in decimal form, not percentage form. You need to multiply the result by 100 to get the percentage.
• Converting 0.20 to a percent: 0.20 * 100 = 20%
• So 20% of 60 is 12.
• Double check your answer with the original question: What percent of 60 is 12? 12/60 = 0.20, and multiplying by 100 to get percentage, 0.20 * 100 =
20%

## 3. How to find X if P percent of it is Y. Use the percentage formula Y/P% = X

exemplar : 25 is 20 % of what number ?

• Convert the problem to an equation using the percentage formula: Y/P% = X
• Y is 25, P% is 20, so the equation is 25/20% = X
• Convert the percentage to a decimal by dividing by 100.
• Converting 20% to a decimal: 20/100 = 0.20
• Substitute 0.20 for 20% in the equation: 25/0.20 = X
• Do the math: 25/0.20 = X
• X = 125
• So 25 is 20% of 125
• Double check your answer with the original question: 25 is 20% of what number? 25/0.20 =
125

### Remember: How to convert a percentage to a decimal

• Remove the percentage sign and divide by 100
• 15.6% = 15.6/100 = 0.156

### Remember: How to convert a decimal to a percentage

• Multiply by 100 and add a percentage sign
• 0.876 = 0.876 * 100 = 87.6%

## Percentage Problems

There are nine variations on the three basic problems involving percentages. See if you can match your problem to one of the samples below. The problem formats match the input signal fields in the calculator above. Formulas and examples are included .

### What is P percent of X?

• Written as an equation: Y = P% * X
• The ‘what’ is Y that we want to solve for
• Remember to first convert percentage to decimal, dividing by 100
• Solution: Solve for Y using the percentage formula

Y = P% * X

### Example: What is 10% of 25?

• Written using the percentage formula:
Y = 10% * 25
• First convert percentage to a decimal 10/100 = 0.1
• Y = 0.1 * 25 = 2.5
• So 10% of 25 is 2.5

### Y is what percent of X?

• Written as an equation: Y = P% ? X
• The ‘what’ is P% that we want to solve for
• Divide both sides by X to get P% on one side of the equation
• Y ÷ X = (P% ? X) ÷ X becomes Y ÷ X = P%, which is the same as P% = Y ÷ X
• Solution: Solve for P% using the percentage formula

P% = Y ÷ X

### Example: 12 is what percent of 40?

• Written using the formula:
P% = 12 ÷ 40
• P% = 12 ÷ 40 = 0.3
• Convert the decimal to percent
• P% = 0.3 × 100 = 30%
• So 12 is 30% of 40

### Y is P percent of what?

• Written as an equation: Y = P% * X
• The ‘what’ is X that we want to solve for
• Divide both sides by P% to get X on one side of the equation
• Y ÷ P% = (P% × X) ÷ P% becomes Y ÷ P% = X, which is the same as X = Y ÷ P%
• Solution: Solve for X using the percentage formula

X = Y ÷ P%

### Example: 9 is 60% of what?

• Writen using the formula:
X = 9 ÷ 60%
• Convert percent to decimal
• 60% ÷ 100 = 0.6
• X = 9 ÷ 0.6
• X = 15
• So 9 is 60% of 15

### What percent of X is Y?

• Written as an equation: P% * X = Y
• The ‘what’ is P% that we want to solve for
• Divide both sides by X to get P% on one side of the equation
• (P% * X) ÷ X = Y ÷ X becomes P% = Y ÷ X
• Solution: Solve for P% using the percentage formula

P% = Y ÷ X

### Example: What percent of 27 is 6?

• Written using the formula:
P% = 6 ÷ 27
• 6 ÷ 27 = 0.2222
• Convert decimal to percent
• P% = 0.2222 × 100
• P% = 22.22%
• So 22.22% of 27 is 6

### P percent of what is Y?

• Written as an equation: P% × X = Y
• The ‘what’ is X that we want to solve for
• Divide both sides by P% to get X on one side of the equation
• (P% × X) ÷ P% = Y ÷ P% becomes X = Y ÷ P%
• Solution: Solve for X using the percentage formula

X = Y ÷ P%

### Example: 20% of what is 7?

• Written using the formula:
X = 7 ÷ 20%
• Convert the percent to a decimal
• 20% ÷ 100 = 0.2
• X = 7 ÷ 0.2
• X = 35
• So 20% of 35 is 7.

### P percent of X is what?

• Written as an equation: P% * X = Y
• The ‘what’ is Y that we want to solve for
• Solution: Solve for Y using the percentage formula

Y = P% * X

### Example: 5% of 29 is what?

• Written using the formula:
5% * 29 = Y
• Convert the percent to a decimal
• 5% ÷ 100 = 0.05
• Y = 0.05 * 29
• Y = 1.45
• So 5% of 29 is 1.45

### Y of what is P percent?

• Written as an equation: Y / X = P%
• The ‘what’ is X that we want to solve for
• Multiply both sides by X to get X out of the denominator
• (Y / X) * X = P% * X becomes Y = P% * X
• Divide both sides by P% so that X is on one side of the equation
• Y ÷ P% = (P% * X) ÷ P% becomes Y ÷ P% = X
• Solution: Solve for X using the percentage formula

X = Y ÷ P%

### Example: 4 of what is 12%?

• Written using the formula:
X = 4 ÷ 12%
• Solve for X: X = Y ÷ P%
• Convert the percent to a decimal
• 12% ÷ 100 = 0.12
• X = 4 ÷ 0.12
• X = 33.3333
• 4 of 33.3333 is 12%

### What of X is P percent?

• Written as an equation: Y / X = P%
• The ‘what’ is Y that we want to solve for
• Multiply both sides by X to get Y on one side of the equation
• (Y ÷ X) * X = P% * X becomes Y = P% * X
• Solution: Solve for Y using the percentage formula

Y = P% * X

### Example: What of 25 is 11%?

• Written using the formula:
Y = 11% * 25
• Convert the percent to a decimal
• 11% ÷ 100 = 0.11
• Y = 0.11 * 25
• Y = 2.75
• So 2.75 of 25 is 11%

### Y of X is what percent?

• Written as an equation: Y / X = P%
• The ‘what’ is P% that we want to solve for
• Solution: Solve for P% using the percentage formula

P% = Y / X

### Example: 9 of 13 is what percent?

• Written using the formula:
P% = Y / X
• 9 ÷ 13 = P%
• 9 ÷ 13 = 0.6923
• Convert decimal to percent by multiplying by 100
• 0.6923 * 100 = 69.23%
• 9 ÷ 13 = 69.23%
• So 9 of 13 is 69.23%

## Related Calculators

Find the change in share as an increase or decrease using the Percentage Change Calculator .
Solve decimal to percentage conversions with our Decimal to Percent Calculator .
Convert from percentage to decimals with the percentage to Decimal Calculator.

If you need to convert between fractions and percents see our divide to Percent Calculator, or our percentage to Fraction Calculator .

## References

Weisstein, Eric W. “ Percent. ” From MathWorld — A Wolfram Web Resource .

source : https://www.peterswar.net
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