Percentage Calculator
Three common percentage calculations
What is % of ? 5
is what % of ? 12.5%
% change from to ? +25%
About Percentage Calculator
Work out percentages three common ways: the percentage of a number, what percent one number is of another, and the percentage change between two values.
How to use the percentage calculator
- Pick the calculation you need.
- Type the two numbers.
- The answer updates instantly.
- No signup or upload required.
Frequently asked questions
How is percentage change calculated?
As (new − old) ÷ old × 100. A positive result is an increase and a negative result is a decrease.
Are my files uploaded to a server?
No. Everything runs locally in your browser using JavaScript, so your files and text never leave your device.
Is this tool free?
Yes, it is completely free with no signup, no watermarks and no limits.