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Percentage Calculator

Calculate percentages easily with our free online calculator. Find percentage of a number, percentage increase/decrease, percentage difference, and more.

What is X% of Y?
Result:
200
is 20% of 1000
Formula: (Percentage ÷ 100) × Number = (20 ÷ 100) × 1000 = 200
10% of 500
= 50
15% of 200
= 30
25% of 80
= 20
50% of 1000
= 500
Percentage Change (Increase/Decrease)
Percentage Change:
50%
Increase
Formula: ((Final - Initial) ÷ Initial) × 100 = ((150 - 100) ÷ 100) × 100 = 50%
100 → 150
+50% increase
200 → 150
-25% decrease
50 → 75
+50% increase
1000 → 1200
+20% increase
Percentage Difference
Percentage Difference:
40%
difference between values
Formula: (|V1 - V2| ÷ ((V1 + V2) ÷ 2)) × 100 = (|100 - 150| ÷ ((100 + 150) ÷ 2)) × 100 = 40%
100 vs 150
40% difference
200 vs 250
22.2% difference
75 vs 125
50% difference
500 vs 600
18.2% difference
X is what percent of Y?
Percentage:
25%
50 is 25% of 200
Formula: (X ÷ Y) × 100 = (50 ÷ 200) × 100 = 25%
30 of 120
25%
75 of 300
25%
90 of 180
50%
40 of 50
80%
Calculation History

How to Use Percentage Calculator

1. Choose Calculator

Select the type of percentage calculation you need

2. Enter Numbers

Input your values in the fields provided

3. Get Result

Instant calculation with formula explanation

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Data Analysis

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Frequently Asked Questions

What is a percentage?
A percentage is a number or ratio expressed as a fraction of 100. It's often denoted using the percent sign, "%". For example, 45% means 45 per 100, or 45/100.
How do I calculate percentage of a number?
To find the percentage of a number, multiply the number by the percentage and divide by 100. For example, 20% of 1000 = (20 × 1000) ÷ 100 = 200.
How do I calculate percentage increase?
Percentage increase = ((New Value - Original Value) ÷ Original Value) × 100. If the result is positive, it's an increase; if negative, it's a decrease.
What's the difference between percentage change and percentage difference?
Percentage change measures change over time (from old to new), while percentage difference compares two values without time reference. Percentage difference uses the average of the two values as the denominator.
How do I calculate percentage from two numbers?
To find what percentage one number is of another, divide the first number by the second and multiply by 100. For example, 50 is what percent of 200? (50 ÷ 200) × 100 = 25%.
Can I calculate percentages with decimals?
Yes! Our calculator supports decimal numbers for precise calculations. For example, 12.5% of 250 = 31.25, or 33.3% of 90 = 30.

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Quick Tip

To find 10% of any number, just divide by 10. For 5%, divide by 20. For 1%, divide by 100.

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