Work out any percentage in seconds — what a percent of a number is, what percent one number is of another, or the percentage increase or decrease between two numbers.
–
–
How to use this percentage calculator
- Pick what you want to find: a percent of a number, what percent one number is of another, or the change between two numbers.
- Enter the two numbers and press Calculate Percentage.
- You will see the answer plus the working, so you can check it. Nothing you type is sent anywhere; the calculation happens on your own phone or computer.
Examples
- 20% of 150 = 30
- 30 is 20% of 150
- From 100 to 150 = 50% increase; from 150 to 100 = 33.33% decrease
Frequently asked questions
How do you find a percent of a number?
Multiply the number by the percent and divide by 100. For example, 20% of 150 is 150 × 20 ÷ 100 = 30.
How do you find what percent one number is of another?
Divide the first number by the second and multiply by 100. For example, 30 ÷ 150 × 100 = 20%.
How is percentage increase or decrease worked out?
Subtract the old value from the new value, divide by the old value, and multiply by 100. A positive answer is an increase; a negative answer is a decrease.
Is my data stored or shared?
No. This tool works completely inside your browser. Your numbers are never uploaded, saved or shared.
Free Percentage Calculator — fast, private, no sign-up.