How do I calculate what percentage X is of Y?

Divide X by Y, then multiply by 100. For example, 25 is 50% of 50 because 25 ÷ 50 × 100 = 50.

How do I calculate a percentage increase?

Subtract the original from the new value, divide by the original, then multiply by 100. For example, going from 80 to 100 is a 25% increase.

15% of 200 is 30. Multiply 200 by 0.15 to get the answer.

Percentage Calculator

Calculate percentages, find what percent one number is of another, or compute values from percentages.

Text input

About Percentage Calculator

Calculate percentages, find what percent one number is of another, or compute values from percentages. Powered by JustUse.me — free, ad-free, and private. This tool runs entirely in your browser. Your files are never uploaded to any server.

Related tools