Percentage Calculator
PopularCalculate percentage of a number, percentage change, and percentage difference
What is X% of Y?
15% of 200 is equal to 30.
About Percentage Calculator
Percentage Calculator is a multi-mode mathematical utility that handles standard percentage calculations, percentage difference, and percentage increase or decrease.
Designed for students, business owners, and shoppers, it shows step-by-step formula explanations for every result.
Common Use Cases
- Calculating exam score percentages or grade breakdowns
- Working out tip amounts or bill splits while shopping or dining
- Comparing year-over-year growth or decline in business metrics
How to Use Percentage Calculator
- Choose the calculation mode tab you need.
- Fill in the required input numbers.
- View the instant calculated percentage result and formula breakdown.
Real-World Examples
From 200 to 25025% increaseImportant Notes & Limitations
- Rounds results to two decimal places by default
- Does not automatically compound percentage changes over multiple periods
Privacy & Data Security
Percentage Calculator processes all operations 100% locally in your web browser memory. Your files, text snippets, and generated outputs are never stored, logged, or uploaded to any remote server.
Frequently Asked Questions
It supports finding X% of Y, calculating what percent X is of Y, and finding percentage change/growth between two numbers.
Yes, entering two values automatically calculates both the absolute difference and whether it represents an increase or decrease.
Yes, every calculation displays the mathematical equation used to derive the result.
Yes, use the percentage decrease mode or our dedicated Discount & Markup Calculator.