Sumwise

Percentage Difference between 80 and 90

Between 80 and 90: 11.7647% difference

Difference
11.7647%
Gap
10
Average
85
Ratio
1.125 : 1

Sumwise · Maintained by Theo Abbott (pen name) · automated checks · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How the checks work

How to work it out

  1. Gap between the values: |80 − 90| = 10
  2. Average of the values: (80 + 90) ÷ 2 = 85
  3. Divide the gap by the average and multiply by 100: 10 ÷ 85 × 100 = 11.7647%
  4. Check: Work backwards: 0.117647 × 85 = 10, the gap between the values.

In a spreadsheet: =ABS(80-90)/((80+90)/2)*100. Dividing by one of the values instead of their average turns it into a percentage change, which depends on which value you start from.

What the result means

90 is 10 more than 80. Measured against their average, 85, that gap is 11.7647%. The result is the same whichever value you name first.

Prices: if one shop charges $80 and another $90 for the same item, the prices differ by 11.7647%.

Why the average is the base

Dividing the gap of 10 by 80 gives 12.5%, and dividing it by 90 gives 11.1111%. The average, 85, sits between them, so the result does not depend on which value is listed first.

Related results

Results for nearby numbers
80 and 100

Between 80 and 100: 22.2222% difference

70 and 90

Between 70 and 90: 25% difference

The other way round: Percentage change from 80 to 90. Percentage difference is symmetric: between 90 and 80 it is the same 11.7647%, so there is one page for each pair of numbers. Percentage change is not: from 80 to 90 is +12.5%, from 90 to 80 is -11.1111%.

Practice

17 and 48
Show answer

Between 17 and 48: 95.3846% difference

53 and 98
Show answer

Between 53 and 98: 59.6026% difference

69 and 77
Show answer

Between 69 and 77: 10.9589% difference

38 and 47
Show answer

Between 38 and 47: 21.1765% difference

56 and 83
Show answer

Between 56 and 83: 38.8489% difference

10 and 55
Show answer

Between 10 and 55: 138.4615% difference

Calculate another

How answers are calculated and checked: methodology.

Questions

Percentage Difference between 80 and 90

The percentage difference between 80 and 90 is 11.7647%: the gap divided by the average. Formula and steps.

What is the percentage change from 80 to 90?

+12.5%. Percentage change uses the starting value (80) as the base, so it is larger than the percentage difference of 11.7647%.

What is the difference between percentage difference and percentage change?

Percentage change compares a new value with an old one and divides by the old value. Percentage difference compares two values on an equal footing and divides by their average, so the order does not matter.