Sumwise

Percentage Difference between 10 and 20

Between 10 and 20: 66.6667% difference

Difference
66.6667%
Gap
10
Average
15
Ratio
2 : 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: |10 − 20| = 10
  2. Average of the values: (10 + 20) ÷ 2 = 15
  3. Divide the gap by the average and multiply by 100: 10 ÷ 15 × 100 = 66.6667%
  4. Check: Work backwards: 0.666667 × 15 = 10, the gap between the values.

In a spreadsheet: =ABS(10-20)/((10+20)/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

20 is 10 more than 10. Measured against their average, 15, that gap is 66.6667%. The result is the same whichever value you name first.

Prices: if one shop charges $10 and another $20 for the same item, the prices differ by 66.6667%.

Why the average is the base

Dividing the gap of 10 by 10 gives 100%, and dividing it by 20 gives 50%. The average, 15, sits between them, so the result does not depend on which value is listed first.

Related results

Results for nearby numbers
10 and 30

Between 10 and 30: 100% difference

The other way round: Percentage change from 10 to 20. Percentage difference is symmetric: between 20 and 10 it is the same 66.6667%, so there is one page for each pair of numbers. Percentage change is not: from 10 to 20 is +100%, from 20 to 10 is -50%.

Practice

2 and 15
Show answer

Between 2 and 15: 152.9412% difference

43 and 63
Show answer

Between 43 and 63: 37.7358% difference

93 and 98
Show answer

Between 93 and 98: 5.2356% difference

25 and 80
Show answer

Between 25 and 80: 104.7619% difference

11 and 63
Show answer

Between 11 and 63: 140.5405% difference

60 and 70
Show answer

Between 60 and 70: 15.3846% difference

Calculate another

How answers are calculated and checked: methodology.

Questions

Percentage Difference between 10 and 20

The percentage difference between 10 and 20 is 66.6667%: the gap divided by the average. Formula and steps.

What is the percentage change from 10 to 20?

+100%. Percentage change uses the starting value (10) as the base, so it is larger than the percentage difference of 66.6667%.

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.