What Is X% Of Y?
Use this when you want to calculate something like 20% of 500.
Calculator Inputs
Examples
Result
Result
100
Formula
Y × X ÷ 100
Explanation
20% of 500 is 100.
Quick Percentage Reference
10% = 0
25% = 0
50% = 0
75% = 0
100% = 0
125% = 0
What Is A Percentage Calculator?
A percentage calculator helps you solve common percentage problems, such as finding a percentage of a number, calculating percentage increase or decrease, working out discounts, comparing two values and reversing percentages.
Common Percentage Calculations
X Is What Percent Of Y?
Use this when you want to know what percentage one number is of another.
Percentage Increase
Calculate how much a value has increased compared with the original amount.
Percentage Decrease
Calculate how much a value has decreased compared with the original amount.
Discount Calculator
Calculate sale prices after a percentage discount.
Markup And Margin
Useful for business pricing, profit calculations and retail markups.
How To Calculate A Percentage
To calculate a percentage of a number, divide the percentage by 100 and multiply by the number.
For example, 20% of 500 is 500 × 20 ÷ 100 = 100.
Percentage Increase Formula
Percentage increase is calculated by subtracting the original value from the new value, dividing by the original value, then multiplying by 100.
((New Value - Original Value) ÷ Original Value) × 100
Percentage Decrease Formula
Percentage decrease is calculated by subtracting the new value from the original value, dividing by the original value, then multiplying by 100.
((Original Value - New Value) ÷ Original Value) × 100
Frequently Asked Questions
What is 20% of 500?
20% of 500 is 100.
How do I calculate percentage increase?
Subtract the original value from the new value, divide by the original value, then multiply by 100.
How do I calculate percentage decrease?
Subtract the new value from the original value, divide by the original value, then multiply by 100.
How do I calculate a discount?
Multiply the original price by the discount percentage, then subtract that amount from the original price.
Does this calculator work on mobile?
Yes. This percentage calculator works on desktop, tablet and mobile browsers.
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