Percentage Calculator Help

Getting Started

Our percentage calculator is designed to make your percentage calculations fast and accurate. Whether you're calculating discounts, tax, or growth rates, this tool simplifies the process. You can use it for personal finance, business analytics, academic purposes, or everyday calculations.

Simply input the numbers according to the calculation type, and the calculator will instantly provide the result. If you encounter any issues or need clarification on how to use specific features, this help section is here to guide you step-by-step.

Basic Calculations

1. Calculate Percentage of a Number

To find X% of Y: (X ÷ 100) × Y = Result Example: 20% of 500 = (20 ÷ 100) × 500 = 100

2. Percentage Increase/Decrease

Formula for change from Old to New value: [(New - Old) ÷ Old] × 100 = % Change Example: 50 → 75 = 50% increase

Advanced Features

Reverse Percentage Calculations

Find original number from percentage: (Result × 100) ÷ Percentage = Original Number Example: 25 is 20% of 125

Important Formatting Notes

  • Use either dot (.) or comma (,) as decimal separator
  • Do not use thousands separators
  • Whole numbers can be entered without decimals

Troubleshooting Common Issues

  • Red highlighted fields indicate invalid input
  • Empty result field means calculation error
  • Ensure all required fields are filled