Percentage Calculator
Calculate percentages instantly. Find X% of a number, add or subtract percentages, and compute percentage change.
25
25% of 100
25
X% of Number
125
Add % to Number
75
Subtract % from Number
-
% Change (needs 2 numbers)
How to Use
- Enter your number in the first input field — this is the base value you want to calculate percentages from.
- Enter the percentage in the second field — use values like 25 for 25%, 10 for 10%, etc.
- Click any calculation button to see the result: "X% of Number" finds a percentage of your number, "Add Percentage" increases the number by that %, "Subtract Percentage" decreases it.
- View all results below the main result to see all calculations at once. For percentage change, you'll need to enter values in both fields.
How do I calculate percentage change between two numbers?
Enter your original number in the first field and your new number in the second field, then click "Percentage Change". The formula is: ((New - Original) / Original) × 100%.
Can I use decimals or negative numbers?
Yes! The calculator handles decimal numbers (like 15.5 or 99.9) and negative numbers. Both positive and negative results are calculated correctly.
Is this calculator free for commercial use?
Absolutely. Our percentage calculator is completely free to use for any purpose, personal or commercial. No attribution required.