Tool World

Percentage Calculator

Calculate percentages, increases, and decreases

Our versatile percentage calculator handles all your percentage needs: find X% of a number, calculate percentage change, or find what percentage one number is of another.

Frequently Asked Questions

How do I calculate a percentage?

To find X% of a number, multiply the number by X and divide by 100.

How do I calculate percentage change?

Subtract the old value from the new value, divide by the old value, and multiply by 100.