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// myloanmath
Percentage Calculator
Four of the most common percentage calculations, all in one place.
Four ways to calculate a percentage
Percentage questions come in different shapes depending on what you already know. This calculator covers the four you'll run into most often: finding a percentage of a number, finding what percentage one number is of another, finding the percentage change between two values, and applying a percentage increase or decrease to a starting number.
Frequently asked questions
What is 15% of 200?
Use the "X% of Y" mode with X=15 and Y=200 — the answer is 30.
How do I calculate percentage change between two numbers?
Use the "% change from X to Y" mode. It correctly handles negative starting values too, which trips up a lot of simple percentage calculators.
How do I calculate a percentage increase?
Use "Increase / decrease X by Y%" with a positive Y for an increase, or a negative Y for a decrease.