Solve every common percentage question — what is X% of Y, X is what percent of Y, and percentage change.
Solve every common percentage question — what is X% of Y, X is what percent of Y, and percentage change. Everything is worked out in your browser, so your figures never leave your device.
Multiply the number by the percentage and divide by 100. For example, 15% of 2400 is 2400 x 15 / 100 = 360. The first tab does this for you and shows the working.
Divide the first number by the second and multiply by 100. For example, 45 out of 150 is 45 / 150 x 100 = 30%.
Subtract the original value from the new value, divide by the original value, then multiply by 100. Going from 200 to 250 is a 25% increase. A negative result means a decrease.
Each percentage applies to a different base. 100 rising 50% gives 150; 150 falling 50% gives 75, not 100. The third tab makes this easy to check.