Multi-Function Percentage Calculator

Percentage Calculator – Description

This Percentage Calculator helps you solve multiple types of percentage problems quickly and easily.
Unlike a basic percentage calculator that works on only one formula, this tool allows you to calculate percentage values, percentage increase or decrease, and compare numbers using percentages — all in one place.

The calculator updates results instantly as you type, making it useful for students, teachers, business users, and everyday calculations.

 How to Use the Percentage Calculator

Each row in the calculator performs a different percentage calculation.
Simply enter numbers in the input boxes, and the result will appear automatically.

 What is X% of Y

• Enter the percentage in the first box

• Enter the number in the second box

• The calculator shows how much X percent of Y is

Example:
50% of 80 = 40

 What is X − Y%

• Enter the original number

• Enter the percentage to subtract

• The result shows the value after percentage reduction

Example:
100 − 75% = 25

 What is X + Y%

• Enter the original number

• Enter the percentage to add

• The calculator shows the increased value

Example:
50 + 80% = 90

 X is what percent of Y

• Enter the smaller number

• Enter the larger number

• The calculator shows what percent the first number is of the second

Example:
60 is what percent of 80 = 75%

 X is what Y% of what

• Enter the final result value

• Enter the percentage

• The calculator finds the original number

Example:
50 is what 50% of what = 100

 Notes

• Results update automatically as you type

• No submit or calculate button needed

• Supports whole numbers and decimals

• Works on mobile, tablet, and desktop devices