Percentage Calculator

Type two numbers and get every common percentage answer instantly.

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<p style="font-size:12px"><a href="https://rebota.in/tools/percentage-calculator">Percentage Calculator</a> by Rebota</p>

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How to use the Percentage Calculator

Enter the first number as X (usually the percentage or the old value).
Enter the second number as Y (the total or the new value).
Read the answer you need from the list — every common percentage question is answered at once.

Formula used

X% of Y = X × Y ÷ 100

X as % of Y = X ÷ Y × 100

% change = (Y − X) ÷ |X| × 100

Y increased by X% = Y × (1 + X/100)

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Percentage Calculator — FAQs

How do I calculate a percentage of a number?▾

Multiply the number by the percentage and divide by 100. For example, 25% of 200 is 25 × 200 ÷ 100 = 50.

How do I calculate percentage increase?▾

Subtract the old value from the new value, divide by the old value and multiply by 100. From 50 to 60 is (60 − 50) ÷ 50 × 100 = 20% increase.

Is a 50% loss recovered by a 50% gain?▾

No. If 100 falls 50% to 50, it needs a 100% gain to return to 100, because the percentage is calculated on a smaller base.

What is the difference between percent and percentage points?▾

A move from 10% to 12% is a 2 percentage-point rise but a 20% relative increase.

How to use the Percentage Calculator

Formula used

Percentage Calculator — FAQs

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