Percentage Calculator
calculator
1. How to Use
- Basic Percentage: Enter a percentage and a number to find X% of that number.
- Percentage Change: Enter original and new values to calculate the percentage increase or decrease.
- Press Enter or click Calculate for results. Use Reset to clear inputs.
2. How It Works
Basic: Result = (Percentage ÷ 100) × Number.
Change: ((New Value − Old Value) ÷ Old Value) × 100.
All calculations run in your browser. No data is sent to any server.
3. About Percentage Calculator
Free online percentage calculator for everyday math. Calculate discounts, tax, growth rates, and more.
Use it for shopping, investments, grades, or any percentage-related calculation.
4. Advantages
- Two modes: Basic percentage and percentage change.
- Instant results. No signup required.
- Works on any device with a browser.
5. Real-World Use Cases
- Shopping: Calculate discount amounts and final prices.
- Finance: Investment returns, interest, and tax.
- Academics: Test scores and grade percentages.
- Business: Sales growth and revenue change.