Calculate percentages instantly. Find % of a number, percentage change, increase/decrease, or what percent X is of Y.
To find X% of a number, multiply the number by X and divide by 100. For example, 15% of 200 = 200 × 15 / 100 = 30. This calculator handles this instantly — just enter the percentage and the number.
Percentage change = ((New Value − Old Value) / Old Value) × 100. A positive result means an increase; negative means a decrease. For example, if a price goes from ₹500 to ₹600: ((600−500)/500) × 100 = 20% increase.
Percentage is a fraction of 100 (e.g., 85% marks means 85 out of 100). Percentile indicates your rank relative to others (e.g., 90th percentile means you scored higher than 90% of all test-takers). They measure different things.
Divide the part by the whole and multiply by 100. For example, "what percent is 45 of 200?" → (45 / 200) × 100 = 22.5%. This is commonly used for calculating exam scores, discounts, and profit margins.
Percentages are used everywhere: calculating GST and income tax, determining exam scores and grades, computing loan interest rates, measuring salary hikes, figuring out shopping discounts, and tracking investment returns like CAGR and SIP growth.