# PERCENT DIFFERENCE CALCULATOR

## Calculate the percentage difference between two numbers

PERCENT DIFFERENCE CALCULATOR

Start value:

End value:

Our percent difference calculator uses this formula:

| (y2 - y1) / ((y1 + y2)/2) | *100 = percentage difference
(where y1=start value and y2=end value)
How to calculate the percentage difference?

The percentage difference is the difference in percent between two positive numbers. The percentage difference between the given numbers is the absolute value of the difference between these numbers divided by the average and multiplied by 100.

This is the formula to calculate the percent difference:

| (V1 - V2) / ((V1 + V2)/2) | * 100

Note: the "|" symbol indicates an absolute value, which means that negative values become positive.

Percent difference versus percent change

The percent difference and the percent change are two different ways of measuring the relationship between two values.

The percent difference is a measure of the absolute difference between two values. To calculate the percent difference, subtract one value from the other, divide the result by the average of the two values, and then multiply by 100. This calculation gives the percent difference that the two values are apart from one another.

The percent change is a measure of the relative difference between two values. To calculate the percent change, subtract one value from the other, divide the result by the original value, and then multiply by 100. This calculation gives the percent change of the two values compared to the starting value.

The percent difference and the percent change are useful for comparing values and understanding the magnitude of change between two points in time. The percent difference is typically used to compare absolute values, while the percent change is used to compare relative values.

Examples

1. Calculate the percentage difference between two numbers

How to figure the percentage difference between 90 and 115?

The order of the values does not matter, as we simply divide the difference between two values by the average to get the percentage difference.
Assuming V1 = 90 and V2 = 110, let's now enter the values into the formula for percentage difference.

| (V1 - V2) / ((V1 + V2)/2) | * 100 = | (90 - 115) / ((90 + 115)/2) | * 100 = 24.39 %

Thus, the percentage difference between 80 and 120 is exactly 24.39%.

Note that the percentage difference is an absolute value. In this case, the negative result becomes positive.

2. Find the percentage difference between two prices

John and Alex want to buy a new refrigerator. John's refrigerator costs 750 USD, while Alex's comes to 850 USD. How to determine the percentage difference between the two prices?

We now enter V1 = 550 and V2 = 690 into our formula. Remember that the order of the values does not matter.

| (V1 - V2) / ((V1 + V2)/2) | * 100 = | (550 - 690) / ((550 + 690)/2) | * 100 = 22.58 %

This results in a price difference of 22.58 % between the two refrigerators.

Other online calculators

Here you can compute the percent change between two values.
Here you can figure the percent increase between two numbers.
Here you can find the percent decrease between two numbers.