Four quick percentage calculators in one place: percent of a number, what percent, percentage change, and adding or taking off a percentage.
What is X% of Y?
%
of
Answer
300
15% of 2,000 is 300.
X is what % of Y?
of
Answer
25%
450 is 25% of 1,800.
Percentage increase or decrease
→
Answer
+15%
From 40,000 to 46,000 is a rise of 15%.
Add or subtract a percentage
±
%
Answer
2,000
2,500 − 20% = 2,000. Use a minus sign for a discount.
15% of 2,000 is 300. 450 is 25% of 1,800. Change from 40,000 to 46,000 is 15%.
ⓘResults are estimates based on the figures you enter and standard formulas. They are for information only and are not financial, investment, tax or legal advice. Rates and rules change, so confirm with your bank, fund house, employer or tax adviser before you decide. Read the full disclaimer.
Percentage formulas
Percentage formulas
Question
Formula
Example
X% of Y
Y × X ÷ 100
15% of 2,000 = 300
X is what % of Y
X ÷ Y × 100
450 of 1,800 = 25%
% change from A to B
(B − A) ÷ A × 100
40,000 → 46,000 = +15%
Y plus or minus X%
Y × (1 + X ÷ 100)
2,500 − 20% = 2,000
Everyday uses
Exams: marks percentage and percentile cut-offs.
Shopping: discounts and sale prices.
Work: salary hikes and appraisals.
Money: returns, price changes and GST. See the GST calculator.
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Frequently asked questions
How do I calculate a percentage of a number?+
Multiply the number by the percentage and divide by 100. For example, 15% of 2,000 = 2,000 × 15 ÷ 100 = 300.
How do I find what percentage one number is of another?+
Divide the part by the whole and multiply by 100. For example, 450 out of 1,800 = 450 ÷ 1,800 × 100 = 25%.
How do I calculate percentage increase?+
Subtract the old value from the new value, divide by the old value and multiply by 100. From 40,000 to 46,000: (46,000 − 40,000) ÷ 40,000 × 100 = 15%.
How do I calculate marks percentage?+
Divide your total marks by the maximum marks and multiply by 100. For 450 out of 500: 450 ÷ 500 × 100 = 90%. Use the “X is what % of Y” box above.
How do I calculate a discount?+
Use the last box with a negative percentage. ₹2,500 with a 20% discount: 2,500 − 20% = ₹2,000.