Sumwise

Percentage Difference between 15 and 28

Between 15 and 28: 60.4651% difference

Difference
60.4651%
Gap
13
Average
21.5
Ratio
1.8667 : 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: |15 − 28| = 13
  2. Average of the values: (15 + 28) ÷ 2 = 21.5
  3. Divide the gap by the average and multiply by 100: 13 ÷ 21.5 × 100 = 60.4651%
  4. Check: Work backwards: 0.604651 × 21.5 = 13, the gap between the values.

In a spreadsheet: =ABS(15-28)/((15+28)/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

28 is 13 more than 15. Measured against their average, 21.5, that gap is 60.4651%. The result is the same whichever value you name first.

Prices: if one shop charges $15 and another $28 for the same item, the prices differ by 60.4651%.

Why the average is the base

Dividing the gap of 13 by 15 gives 86.6667%, and dividing it by 28 gives 46.4286%. The average, 21.5, sits between them, so the result does not depend on which value is listed first.

Related results

Results for nearby numbers
15 and 38

Between 15 and 38: 86.7925% difference

15 and 18

Between 15 and 18: 18.1818% difference

25 and 28

Between 25 and 28: 11.3208% difference

5 and 28

Between 5 and 28: 139.3939% difference

The other way round: Percentage change from 15 to 28. Percentage difference is symmetric: between 28 and 15 it is the same 60.4651%, so there is one page for each pair of numbers. Percentage change is not: from 15 to 28 is +86.6667%, from 28 to 15 is -46.4286%.

Practice

3 and 73
Show answer

Between 3 and 73: 184.2105% difference

36 and 44
Show answer

Between 36 and 44: 20% difference

11 and 34
Show answer

Between 11 and 34: 102.2222% difference

27 and 82
Show answer

Between 27 and 82: 100.9174% difference

4 and 44
Show answer

Between 4 and 44: 166.6667% difference

83 and 94
Show answer

Between 83 and 94: 12.4294% difference

Calculate another

How answers are calculated and checked: methodology.

Questions

Percentage Difference between 15 and 28

The percentage difference between 15 and 28 is 60.4651%: the gap divided by the average. Formula and steps.

What is the percentage change from 15 to 28?

+86.6667%. Percentage change uses the starting value (15) as the base, so it is larger than the percentage difference of 60.4651%.

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.