Calculate percentages, percentage change, and percentage difference quickly.
How it works
X% of Y = X / 100 x Y. X is what % of Y = X / Y x 100. Change = (B - A) / |A| x 100. Difference = |A - B| / ((A + B) / 2) x 100.
Frequently asked questions
Percentage change vs percentage difference?
Change measures movement from a starting value. Difference compares two values symmetrically, with neither one as the base.
How do I calculate a discount?
Use the first calculator for the discount amount, then subtract it from the price.
Can I use negative numbers?
Yes, except where division by zero would occur.