Percentage Calculator

Calculate percentages, percentage change, increase, and decrease with multiple calculation modes.

Select Calculation Mode

What is X% of Y?

50

Result

Formula Used

25% of 200 = 50

Quick Reference

X% of Y

Formula: (X / 100) × Y

X is ?% of Y

Formula: (X / Y) × 100

% Change

Formula: ((New - Old) / Old) × 100

Increase/Decrease

Formula: X ± (X × Y / 100)

How to Use

1. Select the calculation mode from the tabs

2. Enter the required values

3. View the result instantly with the formula used

Note: All processing happens in your browser. Your data never leaves your device.