Percentage Calculator
Six essential percentage calculators in one — percentage of, percentage change, marks, discount, increase/decrease, and reverse percentage.
① What is X% of Y?
② X is what % of Y?
③ Percentage Change
④ Marks / Score Percentage
⑤ Discount Calculator
Why a Multi-Function Percentage Calculator Saves Time
Percentage calculations are used every day — from calculating GST on a bill, to finding your exam score percentage, to working out discount savings. A single percentage formula is not enough: you need to find what percentage one number is of another, calculate percentage increase or decrease, work backwards to find the original price, and more. Our calculator handles all 6 common percentage operations in one page, saving you from switching between tools or making errors in manual calculation.
Frequently Asked Questions
How to calculate percentage of marks? ▼
Percentage = (Marks Obtained ÷ Total Marks) × 100. Example: 450 out of 500 = (450÷500)×100 = 90%. Our Marks Percentage Calculator does this instantly and also shows the grade (A+, A, B, etc.).
How to calculate percentage increase? ▼
Percentage Increase = ((New Value − Old Value) ÷ Old Value) × 100. Example: salary increased from ₹40,000 to ₹46,000 = ((46000−40000)÷40000)×100 = 15% increase. Use our Percentage Change calculator.
What is 20 percent of 5000? ▼
20% of 5000 = (20÷100) × 5000 = ₹1,000. Use the "What is X% of Y" calculator above for instant results on any percentage calculation.
How to calculate discount percentage? ▼
Discount % = ((Original Price − Discounted Price) ÷ Original Price) × 100. Example: MRP ₹2,000, sale price ₹1,400 → Discount = ((2000−1400)÷2000)×100 = 30%. Enter values in our Discount Calculator.
How to find the original price before discount? ▼
Original Price = Discounted Price ÷ (1 − Discount%/100). Example: If final price after 30% discount is ₹700, original = 700 ÷ 0.70 = ₹1,000. Use our Reverse Percentage calculator.
What is the difference between percentage and percentile? ▼
Percentage is the ratio of marks obtained to total marks (e.g., 85%). Percentile shows what percentage of students scored below you (e.g., 95th percentile = you scored better than 95% of test-takers). JEE and NEET use percentile, not percentage.