Sumwise

Percentage Difference between 15 and 66

Between 15 and 66: 125.9259% difference

Difference
125.9259%
Gap
51
Average
40.5
Ratio
4.4 : 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 − 66| = 51
  2. Average of the values: (15 + 66) ÷ 2 = 40.5
  3. Divide the gap by the average and multiply by 100: 51 ÷ 40.5 × 100 = 125.9259%
  4. Check: Work backwards: 1.259259 × 40.5 = 51, the gap between the values.

In a spreadsheet: =ABS(15-66)/((15+66)/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

66 is 51 more than 15. Measured against their average, 40.5, that gap is 125.9259%. The result is the same whichever value you name first.

Prices: if one shop charges $15 and another $66 for the same item, the prices differ by 125.9259%.

Why the average is the base

Dividing the gap of 51 by 15 gives 340%, and dividing it by 66 gives 77.2727%. The average, 40.5, sits between them, so the result does not depend on which value is listed first.

Related results

Results for nearby numbers
15 and 76

Between 15 and 76: 134.0659% difference

15 and 56

Between 15 and 56: 115.493% difference

25 and 66

Between 25 and 66: 90.1099% difference

5 and 66

Between 5 and 66: 171.831% difference

The other way round: Percentage change from 15 to 66. Percentage difference is symmetric: between 66 and 15 it is the same 125.9259%, so there is one page for each pair of numbers. Percentage change is not: from 15 to 66 is +340%, from 66 to 15 is -77.2727%.

Practice

4 and 37
Show answer

Between 4 and 37: 160.9756% difference

58 and 83
Show answer

Between 58 and 83: 35.461% difference

28 and 82
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Between 28 and 82: 98.1818% difference

6 and 18
Show answer

Between 6 and 18: 100% difference

42 and 52
Show answer

Between 42 and 52: 21.2766% difference

22 and 93
Show answer

Between 22 and 93: 123.4783% difference

Calculate another

How answers are calculated and checked: methodology.

Questions

Percentage Difference between 15 and 66

The percentage difference between 15 and 66 is 125.9259%: the gap divided by the average. Formula and steps.

What is the percentage change from 15 to 66?

+340%. Percentage change uses the starting value (15) as the base, so it is larger than the percentage difference of 125.9259%.

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.