The Percentage Calculator helps you calculate percentages, percentage increase, percentage decrease, and what percentage one value is of another.
Introduction
The Percentage Calculator is a useful math tool for students, shoppers, business owners and everyday users. It helps solve common percentage problems quickly and accurately.
What is Percentage?
Percentage means a value out of 100. It is commonly used in marks, discounts, profit, loss, tax, interest, data analysis and many daily calculations.
Percentage Formula
Percentage = (Part ÷ Total) × 100
X% of Y Formula
Result = (X ÷ 100) × Y
Percentage Increase Formula
Increase % = ((New Value − Original Value) ÷ Original Value) × 100
Percentage Decrease Formula
Decrease % = ((Original Value − New Value) ÷ Original Value) × 100
How to Use the Percentage Calculator
Select the percentage calculation type.
Enter the required values.
Click the Calculate button.
The result will appear instantly.
Your calculation will be saved in browser history.
Features of the Percentage Calculator
Calculates X% of Y
Finds what percentage one number is of another
Calculates percentage increase
Calculates percentage decrease
Saves recent calculations in browser history
Common Uses
Marks and exam percentage calculation
Discount and shopping calculations
Profit and loss comparison
Business growth analysis
Daily math and finance calculations
Technologies Used
This calculator is developed using HTML for structure, CSS for design and JavaScript for percentage calculation, result display and browser-based history storage.