Five common percentage sums in one place.
X% of Y is Y × X ÷ 100.
Percent of a number, what percent, change, add or take off.
The result appears as you type.
Use the copy button.
Use Take off a percent. For 20% off 2500, enter 2500 and 20.
Use Increase or decrease. Enter the old number, then the new number.
A percentage of zero has no meaning, so the tool tells you instead of showing a wrong number.
No. It is calculated in your browser.