% Percentage Calculator
Calculate percentages, increases, decreases and changes in 4 modes.
How to Use the Percentage Calculator
Follow these steps for best results.
Why Use This Tool?
Percentage calculations appear in virtually every professional domain — finance, marketing, education, health, and analytics. The four modes cover the most common calculation directions, eliminating the need to rearrange the formula mentally and reducing the risk of errors in financial or client-facing contexts.
Frequently Asked Questions — Percentage Calculator
Common questions about this tool.
About Percentage Calculator
A percentage expresses a number as a fraction of 100 and appears in tax calculations, discounts, interest rates, exam scores, nutrition labels, and financial reports. Despite their frequency, percentage calculations are a common source of errors, particularly when working backwards from a final value. The four modes cover the most common directions: finding a percentage of a number, finding what percentage one number is of another, measuring percentage change between two values, and applying a percentage increase or decrease to a base figure.