The difference is 10 and the average is 45.
Percent difference calculator
Percentage Difference Calculator
Use this calculator when you are comparing two values and neither value is clearly the original starting point. It tells you how far apart the values are using the average of both values as the base.
Percent difference calculator
Calculate percentage difference
Enter the two values you want to compare. The calculator uses the average of both values, so the percentage difference result is symmetric.
Answer
100 and 125
22.22%100 and 125 have a 22.22% difference.
- Difference
- 25
- Average
- 112.5
Formula
absolute difference / average x 100- Find the difference: 25.
- Find the average: 112.5.
- Divide 25 by 112.5, then multiply by 100.
- Result: 22.22%.
Formula
Percentage Difference Calculator formula
Use the formula when you want to check the calculation by hand.
absolute difference / average x 100- Find the absolute difference between the two values.
- Find the average of the two values.
- Divide the difference by the average, then multiply by 100.
Examples
Common percentage difference calculator examples
These examples show the same formula with different numbers.
The difference is 20 and the average is 90.
The difference is 3 and the average is 13.5.
The difference is 25 and the average is 112.5.
The difference is 14 and the average is 77.
The difference is 60 and the average is 230.
Use cases
When to use this percentage difference calculator
Pick the calculator that matches the wording of the problem.
Compare two values
Use percentage difference for side-by-side comparisons where there is no obvious old value and new value.
Keep direction out
Percent difference is usually positive. It tells you how far apart two values are, not which direction one moved.
Use the average base
The percentage difference formula uses the average of the two values so switching the order does not change the result.
Use change for time
If one number is the old value and the other is the new value, use a percentage change calculator instead.
Choose the right formula
Percentage difference vs percentage change
These two searches often look similar, but the base value changes the answer. This page owns side-by-side comparison intent.
Use percentage difference when there is no starting value
Choose this percent difference calculator when you are comparing two values as peers.
Use percentage change for old-to-new movement
The percentage change calculator uses the old value as the base and shows whether the value increased or decreased.
percentage change calculatorUse percentage increase for growth only
The percentage increase calculator is best when the new value is higher than the original value.
percentage increase calculatorRelated calculators
Choose another percentage calculator
Use a focused page when your percentage question has a narrower meaning.
- percentage calculatorUse the broad calculator for mixed percentage questions.
- percentage increase calculatorUse this when a value went up from an original value.
- percentage change calculatorUse this when a value changed from old to new.
- percent off calculatorUse this for discounts and sale prices.
FAQ
Percentage Difference Calculator questions
Short answers for common calculation questions.
How do you calculate percentage difference?
Find the absolute difference between the two values, divide it by the average of the two values, then multiply by 100.
What is the percent difference formula?
The percent difference formula is absolute difference divided by the average of both values, multiplied by 100.
How do you find a percentage difference?
Find the absolute difference between the two numbers, divide it by their average, then multiply by 100. That gives the percentage difference.
Is percentage difference the same as percentage change?
No. Percentage change uses an original value as the base. Percentage difference compares two values using their average as the base.
Can percentage difference be negative?
Percentage difference is normally not negative because it uses the absolute difference between two values.