Sumwise

Percentage Difference between 70 and 90

Between 70 and 90: 25% difference

Difference
25%
Gap
20
Average
80
Ratio
1.2857 : 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: |70 − 90| = 20
  2. Average of the values: (70 + 90) ÷ 2 = 80
  3. Divide the gap by the average and multiply by 100: 20 ÷ 80 × 100 = 25%
  4. Check: Work backwards: 0.25 × 80 = 20, the gap between the values.

In a spreadsheet: =ABS(70-90)/((70+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 20 more than 70. Measured against their average, 80, that gap is 25%. The result is the same whichever value you name first.

Prices: if one shop charges $70 and another $90 for the same item, the prices differ by 25%.

Why the average is the base

Dividing the gap of 20 by 70 gives 28.5714%, and dividing it by 90 gives 22.2222%. The average, 80, sits between them, so the result does not depend on which value is listed first.

Related results

Results for nearby numbers
70 and 100

Between 70 and 100: 35.2941% difference

70 and 80

Between 70 and 80: 13.3333% difference

80 and 90

Between 80 and 90: 11.7647% difference

60 and 90

Between 60 and 90: 40% difference

The other way round: Percentage change from 70 to 90. Percentage difference is symmetric: between 90 and 70 it is the same 25%, so there is one page for each pair of numbers. Percentage change is not: from 70 to 90 is +28.5714%, from 90 to 70 is -22.2222%.

Practice

10 and 14
Show answer

Between 10 and 14: 33.3333% difference

39 and 46
Show answer

Between 39 and 46: 16.4706% difference

4 and 85
Show answer

Between 4 and 85: 182.0225% difference

58 and 96
Show answer

Between 58 and 96: 49.3506% difference

73 and 88
Show answer

Between 73 and 88: 18.6335% difference

72 and 92
Show answer

Between 72 and 92: 24.3902% difference

Calculate another

How answers are calculated and checked: methodology.

Questions

Percentage Difference between 70 and 90

The percentage difference between 70 and 90 is 25%: the gap divided by the average. Formula and steps.

What is the percentage change from 70 to 90?

+28.5714%. Percentage change uses the starting value (70) as the base, so it is larger than the percentage difference of 25%.

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.