Percentage Calculator
Utilities
Percentage calculator
Compute percent of a number, percent change, and reverse percentages with instant results.
Choose a percentage operation
Result
300
15% of 2,000
What this calculator does
This Percentage Calculator solves common percentage problems: computing a percentage of a number, calculating percent change between two values, and finding what percent one number is of another. It provides quick, on-page results for budgeting, pricing, and simple analytics.
Who should use this calculator
Small business owners, students, shoppers, and anyone who needs fast percentage arithmetic without opening a spreadsheet. It’s useful for discounts, markups, growth rates, and comparing values in everyday financial tasks.
How this calculator works
It applies standard arithmetic formulas: percent-of uses multiplication (value × percentage), percent change uses (new − old) ÷ old, and reverse percentage uses part ÷ whole. All calculations run client-side with two-decimal display for readability while retaining internal precision for accuracy.
How to interpret your result
Results are exact arithmetic outputs formatted to two decimals for clarity. Use percent change to report growth or decline between values, and percent-of for discounts and markups. For financial rounding or tax reporting, consider local rounding rules when applying results.
Example
If an item costs ₹2,000 and you apply a 15% discount, the calculator shows ₹300 off and a final price of ₹1,700. For percent change, moving from ₹1,000 to ₹1,250 is a 25% increase.
Limitations & disclaimer
This tool performs straightforward arithmetic; it does not apply region-specific tax rules or financial rounding conventions beyond two-decimal display. For accounting, auditing, or tax purposes consult the relevant financial guidance.
FAQs
Can I calculate percent decrease?
Yes. Use the increase/decrease mode and enter a negative change to see the reduced value.
Does it handle reverse percentages?
Use “What percent is A of B” to see the percentage share of one number compared to another.
Any rounding?
Values are shown with two decimals for clarity. Internally calculations use full precision.
Are there hidden calls or ads?
No APIs, no ads. Everything runs locally in your browser.