Percentage Calculator
What is X% of Y?
X is what percent of Y?
Percentage change from X to Y
About this tool
Use this calculator for the three most common percentage problems: finding a percentage of a number, finding what percent one number is of another, and calculating percentage increase or decrease.
FAQ
How do I calculate X% of Y?
Multiply Y by X and divide by 100. For example, 20% of 150 is 150 x 20 / 100 = 30.
How do I calculate percentage change?
Subtract the old value from the new value, divide by the old value and multiply by 100.