Percentage Calculator
Calculate percentages, percentage change, and what percent of a number.
Calculation Mode
%
Result
1,000
Percentage20%
Base Value5,000
Difference1,000
Solve everyday percentage problems instantly: percentage of a number, percentage increase/decrease, and reverse percentage calculations.
What this calculator can solve
Use it for discounts, exam scores, tax rates, growth analysis, salary hikes, and business comparisons without manual formula mistakes.
Core percentage formulas
X% of Y = (X/100) x Y; Percentage Change = (New - Old)/Old x 100
Reverse calculations can find original value from percentage-added or percentage-reduced outcomes.
Frequent real-world uses
- Price change analysis
- Profit and markup checks
- Academic score conversion
- Budget allocation and variance
How to use percentage modes
- Select calculation type
- Enter known values
- Run calculation
- Review result with sign (+/-)
- Round to desired decimal places
Percentage increase example
Scenario: A product price rises from Rs 2,400 to Rs 2,820.
Inputs
- Old value: Rs 2,400
- New value: Rs 2,820
Calculation
- Increase = Rs 420
- Percentage increase = 420/2,400 x 100 = 17.5%
Result: Price increased by 17.5%.
Frequently Asked Questions
Original Value = Final Value / (1 - Discount%).
Yes, a lower new value will show a negative change (percentage decrease).
No. Percentage points measure absolute rate difference, not relative change.
Yes, it is useful for growth, conversion, and margin movement calculations.