Calculating percentages is one of the basic math skills we need daily, whether to calculate a store discount, find the final grade in school, or calculate a salary increase.
What is a percentage?
A percentage is a way of expressing a number as a fraction of 100. It is denoted by the sign (%). For example, 50% means 50 out of every 100.
Most important percentage calculation formulas
| Case | Formula | Example |
|---|---|---|
| Percentage of a number | (Percentage ÷ 100) × Number | 20% of 150 = 30 |
| Number as percent of another | (Part ÷ Whole) × 100 | 30 out of 150 = 20% |
| Calculate discount | Original price - (Price × Percentage) | 100 - (100 × 20%) = 80 |
Steps to use the percentage calculator
- Open the Percentage Calculator tool.
- Choose the calculation type (percentage of a number, or number as percent of another).
- Enter the required numbers.
- The result appears instantly.
Frequently Asked Questions
How do I calculate a percentage without a calculator?
You can use the simple formulas above, or split the percentage into easy parts (e.g., 15% = 10% + 5%).
What is percentage change?
It's the amount of increase or decrease between two values, calculated as: ((New value - Old value) ÷ Old value) × 100.
Is the calculator free?
Yes, all our tools are completely free and work without registration.
Conclusion
No need to worry about percentage calculations anymore. Use the Percentage Calculator tool to get the accurate result in seconds.