Percentage Calculator
Find percentage, percentage change and original value
(P ÷ 100) × N
(N ÷ M) × 100
N × (1 + P/100)
Result
18% of 1000
180
250 is what % of 1000
25%
New Value
1150
Change Amount
150
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Frequently Asked Questions
How do I calculate what percentage one number is of another?
Use the “N is what % of M?” tab: divide N by M and multiply by 100 — for example 250 ÷ 1000 × 100 = 25%.
How is a percentage increase or decrease calculated?
For an increase, multiply the original value by (1 + P/100). For a decrease, multiply by (1 − P/100). The Change Amount shows the absolute difference.
Can this help with exam marks?
Yes, use “N is what % of M?” to convert marks obtained out of total marks into a percentage instantly.
Is this useful for discounts and profit margins?
Yes, the Increase/Decrease tab is ideal for calculating discounted prices, markups, and profit margin changes.