Percentage Calculator

Calculate various percentage-based problems. Select a mode and enter your values.

Calculation Mode

Input Values

Percentage (X%):

Base Number (Y):

About Percentage Calculations

Percentages are a way of expressing a fraction of 100. They are widely used in various contexts, from finance to statistics.

Calculation Modes Explained:

What is X% of Y? Calculates the value that represents X percent of Y. Formula: (X / 100) * Y.
X is what % of Y? Calculates what percentage X is of Y. Formula: (X / Y) * 100.
Percentage Increase/Decrease: Calculates the percentage change from an initial value (X) to a new value (Y). Formula: ((Y - X) / |X|) * 100.
X is Y% of what number? Calculates the whole amount if X is Y percent of it. Formula: (X / Y) * 100.