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Percentage Calculator
Find X% of a number, what percent one number is of another, or a percentage increase or decrease.
About this calculator
Choose what you want to find and enter two numbers. X% of Y = X × Y ÷ 100. X as a percent of Y = X ÷ Y × 100. Percentage change = (Y − X) ÷ X × 100. Example: 20% of 500 is 100; 20 is 4% of 500; going from 20 to 25 is a 25% increase.
Results are estimates for information only. Please confirm important decisions with a qualified professional.
Frequently asked questions
How do I find a percentage increase?
Choose the third option, enter the old value as X and the new value as Y.
Can I use decimals?
Yes. You can use decimals and negative numbers.