How to use the Percentage Calculator
- Find the question that matches yours.
- Type your numbers.
- The answer updates instantly.
About this tool
X% of Y = X ÷ 100 × Y. X as a % of Y = X ÷ Y × 100. Percentage change = (new − old) ÷ old × 100. Marks percentage = marks obtained ÷ total marks × 100.
Frequently asked questions
How do I calculate marks percentage?
Divide your total marks by the maximum marks and multiply by 100. For 438 out of 500 that’s 87.6%.
How do I calculate a 40% discount?
Multiply the price by 0.6. A ₹2,499 item at 40% off costs ₹1,499.40.