What Is Percentage Calculator?
A free online percentage calculator with three modes: find X% of a number, find what percentage one number is of another, and calculate percentage increase or decrease. Results update in real-time as you type.
Why Use Percentage Calculator?
- Three modes: percentage of, percentage of total, percent change
- Real-time calculation as you type
- Handles increase and decrease calculations
- Copy results to clipboard
How to Use Percentage Calculator — Step by Step
1
Choose a calculation mode: X% of Y, X is what % of Y, or % change.
2
Enter your numbers in the input fields.
3
View the result instantly.
4
Copy the result with the copy button.
Who Is Percentage Calculator Best For?
- shopping discounts
- grade calculation
- financial analysis
- data analysis
Percentage Calculator — Frequently Asked Questions
How do I calculate a percentage?
To find X% of Y, multiply Y by X/100. For example, 20% of 50 = 50 * 0.20 = 10. To find what percent X is of Y, divide X by Y and multiply by 100.
How is percentage change calculated?
Percentage change = ((New - Old) / Old) * 100. A positive result is an increase, a negative result is a decrease. For example, going from 100 to 150 is a 50% increase.
Ready to Use Percentage Calculator?
Free online tool — works in your browser, no sign-up required. Start using it right now.
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