Sumwise

What is the Percentage Difference from 20 to 37?

From 20 to 37 is a 85% increase

Change
85%
Difference
17
New ÷ old
1.85
Direction
increase

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: 37 − 20 = 17
  2. Divide by the starting value: 17 ÷ 20 = 0.85
  3. Multiply by 100: 85%
  4. Check: Work forwards from the start: 20 × (1 + 0.85) = 20 × 1.85 = 37.

In a spreadsheet: =(37-20)/20*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 1.85 times the old one: for every 100 at the start there are now 185.

Prices: an item whose price rises from $20 to $37 has gone up by 85%.

Why the change back is different

A 85% rise followed by a 85% fall does not bring you back to 20: it gives 5.55. The second percentage is taken of 37, not of 20, so to undo this change you need 45.9459% instead.

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The other way round: Percentage difference from 37 to 20

Practice

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Calculate another

How answers are calculated and checked: methodology.

Questions

What is the Percentage Difference from 20 to 37?

Going from 20 to 37 is a 85% increase. Formula and steps.

Is going from 20 to 37 an increase or a decrease?

An increase: the value grew by 17, which is 85% of the starting value.

What is the percentage change from 37 back to 20?

-45.9459%. It is a different number because the starting value is now 37, not 20.