Sumwise

What is the Percentage Difference from 15 to 11?

From 15 to 11 is a 26.6667% decrease

Change
-26.6667%
Difference
-4
New ÷ old
0.733333
Direction
decrease

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

How to work it out

  1. Difference: 11 − 15 = -4
  2. Divide by the starting value: -4 ÷ 15 = -0.266667
  3. Multiply by 100: -26.6667%
  4. Check: Work forwards from the start: 15 × (1 − 0.266667) = 15 × 0.733333 = 11.

In a spreadsheet: =(11-15)/15*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 73.3333% of the old one: for every 100 at the start there are now 73.3333, so 26.6667 out of every 100 have gone.

Sales: a price cut from $15 to $11 is a 26.6667% discount.

Why the change back is different

A 26.6667% fall followed by a 26.6667% rise does not bring you back to 15: it gives 13.9333. The second percentage is taken of 11, not of 15, so to undo this change you need 36.3636% instead.

Related results

Results for nearby numbers
15 to 9

From 15 to 9 is a 40% decrease

15 to 10

From 15 to 10 is a 33.3333% decrease

15 to 12

From 15 to 12 is a 20% decrease

15 to 13

From 15 to 13 is a 13.3333% decrease

15 to 21

From 15 to 21 is a 40% increase

The other way round: Percentage difference from 11 to 15

Practice

3 to 50
Show answer

From 3 to 50 is a 1,566.6667% increase

72 to 43
Show answer

From 72 to 43 is a 40.2778% decrease

24 to 20
Show answer

From 24 to 20 is a 16.6667% decrease

33 to 13
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From 33 to 13 is a 60.6061% decrease

11 to 20
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From 11 to 20 is a 81.8182% increase

74 to 64
Show answer

From 74 to 64 is a 13.5135% decrease

Calculate another

How answers are calculated and checked: methodology.

Questions

What is the Percentage Difference from 15 to 11?

Going from 15 to 11 is a 26.6667% decrease. Formula and steps.

Is going from 15 to 11 an increase or a decrease?

A decrease: the value fell by 4, which is 26.6667% of the starting value.

What is the percentage change from 11 back to 15?

36.3636%. It is a different number because the starting value is now 11, not 15.