Percentage Calculator
Calculate percentages, increases, and decreases.
What is% of?30
is what percent of?12.5%
Fromtois a change of25%
How to use this tool
- 1Pick the type of percentage question you need.
- 2Fill in the two known numbers.
- 3The answer appears instantly as you type.
Frequently asked questions
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100. For example, 25 of 200 is 25 / 200 * 100 = 12.5%.
How is percentage change calculated?
Percentage change is (new - old) / old * 100. A positive result is an increase, a negative one is a decrease.