---
title: "how to calculate percentage"  
description: "how to calculate percentage"  
author: "Gurmeet Kaur"  
published: 2019-03-17  
canonical: https://answers.mindstick.com/qa/51881/how-to-calculate-percentage  
category: "math"  
tags: ["mathematicians"]  
reading_time: 3 minutes  

---

# 	how to calculate percentage

how to calculate percentage

## Answers

### Answer by Rahul Roi

| **\ 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% |
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| **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% |
| 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 |
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