PDFandMore24Percentage Calculator
Calculate percentages quickly.
Percentage Calculator
Work out a percentage of a value, find what percentage one value is of another, calculate percentage change, or recover a value from a percentage and result.
Common formulas: percentage of value = rate × value ÷ 100; percentage change = (new − original) ÷ original × 100.
Browser-based processing is used where supported. Review each tool's privacy notes before entering sensitive information.
About Percentage Calculator
Use this percentage calculator to find a percentage of a value, determine what percentage one number is of another, calculate percentage change, or recover an original value from a known result and rate. It is useful for marks, prices, growth, reductions, and everyday comparisons.
How to use it
- Choose the percentage calculation you need.
- Enter the values requested by the selected calculation.
- Select Calculate and review the result.
- Check whether the comparison uses the original value as the base before interpreting percentage change.
Key Features
- ✓ Find a percentage of any value
- ✓ Calculate percentage change
- ✓ Find the percentage relationship between two values
- ✓ Recover a value from a known percentage result
- ✓ Browser-based calculation
Frequently Asked Questions
How do I calculate a percentage of a value?
Multiply the percentage by the value and divide by 100. For example, 20% of 80 is 16.
How is percentage change calculated?
Percentage change is (new value minus original value) divided by original value, multiplied by 100.
Does the calculator upload my values?
No. The calculation runs locally in your browser.