Percentage Calculator
Find a percentage of a number, what percent one number is of another, or percentage change.
How to use Percentage Calculator
- 1Enter your input for percentage calculator.
- 2Review the result on this page.
- 3Download or copy your result.
Frequently Asked Questions
What percentage calculations does this tool support?
Three common ones: finding X% of a number, finding what percentage one number is of another, and calculating the percentage increase or decrease between two values.
How is percentage increase or decrease calculated?
(New Value − Old Value) ÷ Old Value × 100. A positive result is an increase; a negative result is a decrease.
Is this tool really free?
Yes, Percentage Calculator is completely free to use — no sign-up, no hidden charges.