Percentage Calculator Online
Calculate percentages instantly — find X% of a number, what percent X is of Y, or the percentage change between two values. Free and accurate.
How to Use the Percentage Calculator
X% of Y — Find a percentage of a number. Example: What is 20% of ₹5,000? Answer: ₹1,000.
X is what % of Y — Find what percentage one number is of another. Example: 450 is what % of 600? Answer: 75%.
% Change — Find the percentage increase or decrease between two numbers. Example: Salary changed from ₹40,000 to ₹46,000 = +15% increase.
Percentage Formulas
X% of Y
Result = (X ÷ 100) × Y
20% of 500 = 100
X is what % of Y
% = (X ÷ Y) × 100
50 is 25% of 200
% Change
% = ((New − Old) ÷ Old) × 100
200→250 = +25%
Everyday Percentage Examples
| Use Case | Example | Answer |
|---|---|---|
| Shopping Discount | 30% off ₹2,000 | ₹600 off → Pay ₹1,400 |
| Exam Score | 450 out of 600 | 75% |
| Salary Hike | ₹50,000 → ₹57,500 | +15% |
| GST on Invoice | 18% GST on ₹10,000 | GST = ₹1,800 |
| Savings Rate | Save ₹8,000 from ₹50,000 | 16% savings rate |
Frequently Asked Questions
How do I calculate percentage marks in an exam?
Use the formula: (Marks Obtained ÷ Total Marks) × 100. Example: 420 ÷ 500 × 100 = 84%.
How is percentage increase calculated?
% Increase = ((New Value − Old Value) ÷ Old Value) × 100. A salary going from ₹40,000 to ₹46,000 is a 15% increase.
What is the difference between percentage and percentage points?
If interest rates rise from 4% to 6%, that is 2 percentage points — but a 50% increase in the rate itself.
How do I find the original price after a discount?
If a product costs ₹800 after 20% off, the original price = ₹800 ÷ 0.80 = ₹1,000.