Sumwise

What is the Percentage Difference from 23 to 18?

From 23 to 18 is a 21.7391% decrease

Change
-21.7391%
Difference
-5
New ÷ old
0.782609
Direction
decrease

Sumwise · Checked by Theo Abbott · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How we check it

How to work it out

  1. Difference: 18 − 23 = -5
  2. Divide by the starting value: -5 ÷ 23 = -0.217391
  3. Multiply by 100: -21.7391%
  4. Check: Work forwards from the start: 23 × (1 − 0.217391) = 23 × 0.782609 = 18.

In a spreadsheet: =(18-23)/23*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 78.2609% of the old one: for every 100 at the start there are now 78.2609, so 21.7391 out of every 100 have gone.

Sales: a price cut from $23 to $18 is a 21.7391% discount.

Why the change back is different

A 21.7391% fall followed by a 21.7391% rise does not bring you back to 23: it gives 21.913. The second percentage is taken of 18, not of 23, so to undo this change you need 27.7778% instead.

Related results

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From 23 to 16 is a 30.4348% decrease

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From 23 to 17 is a 26.087% decrease

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From 23 to 19 is a 17.3913% decrease

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From 23 to 20 is a 13.0435% decrease

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From 23 to 28 is a 21.7391% increase

The other way round: Percentage difference from 18 to 23

Practice

5 to 48
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From 5 to 48 is a 860% increase

18 to 36
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From 18 to 36 is a 100% increase

14 to 56
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From 14 to 56 is a 300% increase

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From 8 to 98 is a 1,125% increase

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From 14 to 45 is a 221.4286% increase

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From 60 to 15 is a 75% decrease

Calculate another

How answers are calculated and checked: methodology.

Questions

What is the Percentage Difference from 23 to 18?

Going from 23 to 18 is a 21.7391% decrease. Formula and steps.

Is going from 23 to 18 an increase or a decrease?

A decrease: the value fell by 5, which is 21.7391% of the starting value.

What is the percentage change from 18 back to 23?

27.7778%. It is a different number because the starting value is now 18, not 23.