Sumwise

Percentage Change from 24 to 20

From 24 to 20 is a 16.6667% decrease

Change
-16.6667%
Difference
-4
New ÷ old
0.833333
Direction
decrease

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. Difference: 20 − 24 = -4
  2. Divide by the starting value: -4 ÷ 24 = -0.166667
  3. Multiply by 100: -16.6667%
  4. Check: Work forwards from the start: 24 × (1 − 0.166667) = 24 × 0.833333 = 20.

In a spreadsheet: =(20-24)/24*100. Always divide by the starting value, not the new one. A rise from 40 to 50 is +25%, but the fall from 50 back to 40 is −20%.

What the result means

The new value is 83.3333% of the old one: for every 100 at the start there are now 83.3333, so 16.6667 out of every 100 have gone.

Sales: a price cut from $24 to $20 is a 16.6667% discount.

Why the change back is different

A 16.6667% fall followed by a 16.6667% rise does not bring you back to 24: it gives 23.3333. The second percentage is taken of 20, not of 24, so to undo this change you need 20% instead.

Related results

Results for nearby numbers
24 to 18

From 24 to 18 is a 25% decrease

24 to 19

From 24 to 19 is a 20.8333% decrease

24 to 21

From 24 to 21 is a 12.5% decrease

24 to 22

From 24 to 22 is a 8.3333% decrease

24 to 30

From 24 to 30 is a 25% increase

The other way round: Percentage change from 20 to 24. Percentage change is not symmetric: from 24 to 20 is -16.6667%, but from 20 back to 24 is 20%, because the starting value is the base. For a comparison that is the same both ways, use the percentage difference between 20 and 24: 18.1818%. See Percentage difference between 20 and 24.

Practice

5 to 90
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From 5 to 90 is a 1,700% increase

35 to 84
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From 35 to 84 is a 140% increase

50 to 80
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From 50 to 80 is a 60% increase

81 to 76
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From 81 to 76 is a 6.1728% decrease

31 to 49
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From 31 to 49 is a 58.0645% increase

60 to 17
Show answer

From 60 to 17 is a 71.6667% decrease

Calculate another

How answers are calculated and checked: methodology.

Questions

Percentage Change from 24 to 20

Going from 24 to 20 is a 16.6667% decrease. Formula and steps.

Is going from 24 to 20 an increase or a decrease?

A decrease: the value fell by 4, which is 16.6667% of the starting value.

What is the percentage change from 20 back to 24?

20%. It is a different number because the starting value is now 20, not 24.