Percentage Calculator
Free percentage calculator for three questions: what is X% of Y, X is what percent of Y, and the percent change from one value to another.
Independently verified for accuracy
Calculator by Toolsloft ↗- Result
- 50
Work out percentages three ways in one tool: find a percent of a number, find what percent one number is of another, or find the percent change between two numbers. Pick the question you have, enter the two values, and read the answer.
How this is calculated
A percent of a number multiplies the number by the percent over 100. To find what percent one number is of another, divide the part by the total and multiply by 100. Percent change divides the difference by the size of the starting value and multiplies by 100, so it is positive for an increase and negative for a decrease.
How to use
- Choose the type of percentage question you want to answer.
- Enter the two numbers the question needs.
- Read the result, shown as a percent or a plain number.
Examples
- Percent of a number:
25% of 200 = 50 - What percent:
30 is 20% of 150 - Percent change:
100 to 150 = +50%
FAQ
- How do I find a percentage of a number?
- Multiply the number by the percent and divide by 100. For example, 25 percent of 200 is 200 times 25 divided by 100, which is 50.
- How do I calculate percent change?
- Subtract the starting value from the new value, divide by the starting value, and multiply by 100. Going from 100 to 150 is a 50 percent increase.