Percentage Calculator
A fast, professional tool to solve all your percentage problems instantly.
% What is X% of Y?
Calculated Result
--
Run calculation to view explanation
↗ % Change
Enter valid values to calculate.
% Fraction to %
Enter valid numerator/denominator.
How to use this tool
1
Enter Percentage
Type the percentage you want to find.
2
Enter Total Value
Provide the whole amount to compute against.
3
Get Result
The tool instantly shows the calculated amount.
How to Calculate Percentage
Percentage = (Part / Whole) × 100
This is the base formula used in academics, commerce, and everyday calculations.
If you know total marks and obtained marks, dividing obtained by total and multiplying by 100 gives your percentage score.
Percentage Increase Formula
Percentage Increase = ((New Value - Old Value) / Old Value) × 100
Use this when a value rises from one level to another, such as salary growth or sales growth.
A positive result means increase, while a zero value means no change.
Percentage Decrease Formula
Percentage Decrease = ((Old Value - New Value) / Old Value) × 100
Use this when a value falls, such as price drops or reduced monthly expenses.
It helps compare reductions fairly across different base values.
Discount Calculation Formula
Discounted Price = Original Price × (1 - Discount% / 100)
This formula quickly gives the final payable price after discount.
For example, a 20% discount on ₹2,000 gives a final price of ₹1,600.
Real-Life Percentage Examples
- Exam scores and rank cutoff analysis.
- GST and discount comparison while shopping.
- Business growth and profit margin tracking.
- Personal finance tracking for savings growth and expense reduction.
Frequently Asked Questions
How is percent change calculated here?
Percent change is calculated as (new value minus old value) divided by old value, then multiplied by 100.
Can this tool show negative percentage change?
Yes. If the final value is lower than the starting value, the result is shown as a negative percentage.
What happens if denominator is zero in fraction mode?
Division by zero is invalid, so the tool will not return a result until a valid denominator is entered.
Is this calculator useful for exam preparation?
Yes. It helps practice core percentage concepts quickly and reduces arithmetic errors during revision.