Three ways to calculate percentages — find X% of Y, find what percentage X is of Y, or calculate percentage change.
20% of 500 = 100.00
Find X% of Y (e.g., what is 15% of 8,000?), find what percentage X is of Y (e.g., 60 is what % of 240?), or calculate percentage change between two values.
Results update as you type with clear formulas shown below each result, so you understand exactly how the percentage was calculated — useful for learning or verification.
The percentage change calculator clearly labels the result as an increase or decrease and shows both the absolute difference and the percentage change between the two values.
Switch to the "X is what % of Y?" tab. Enter X (the part) and Y (the whole). The formula is: Percentage = (X ÷ Y) × 100. For example, 45 is what % of 180? Answer: (45 ÷ 180) × 100 = 25%.
Switch to the "Percentage Change" tab. Enter the original value and the new value. The formula is: Change% = ((New – Old) ÷ Old) × 100. A positive result means an increase; a negative result means a decrease.
18% of 50,000 = (18 ÷ 100) × 50,000 = ₹9,000. You can use the "What is X% of Y?" tab to calculate this instantly. This is commonly used for GST calculations on large amounts.