Calculate percentages instantly. Three common percentage calculations in one tool.
Mode 1 -- What is X% of Y?
Multiply Y by X/100. For example, 10% of 200 = 200 x (10/100) = 20.
Mode 2 -- X is what % of Y?
Divide X by Y, then multiply by 100. For example, 25 is what % of 200? (25/200) x 100 = 12.5%.
Mode 3 -- X is Y% of what?
Divide X by Y/100. For example, 25 is 10% of what? 25 / (10/100) = 250.
The general percentage formula is: Percentage = (Part / Whole) x 100