Sumwise

Percentage Change from 20 to 50

From 20 to 50 is a 150% increase

Change
150%
Difference
30
New ÷ old
2.5
Direction
increase

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: 50 − 20 = 30
  2. Divide by the starting value: 30 ÷ 20 = 1.5
  3. Multiply by 100: 150%
  4. Check: Work forwards from the start: 20 × (1 + 1.5) = 20 × 2.5 = 50.

In a spreadsheet: =(50-20)/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 2.5 times the old one: for every 100 at the start there are now 250. The value has more than doubled.

Prices: an item whose price rises from $20 to $50 has gone up by 150%.

Why the change back is different

A 150% rise followed by a 150% fall does not bring you back to 20: it gives -25. The second percentage is taken of 50, not of 20, so to undo this change you need 60% instead.

Related results

Results for nearby numbers
20 to 48

From 20 to 48 is a 140% increase

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From 20 to 49 is a 145% increase

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From 20 to 51 is a 155% increase

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From 20 to 52 is a 160% increase

20 to 60

From 20 to 60 is a 200% increase

The other way round: Percentage change from 50 to 20. Percentage change is not symmetric: from 20 to 50 is 150%, but from 50 back to 20 is -60%, because the starting value is the base. For a comparison that is the same both ways, use the percentage difference between 20 and 50: 85.7143%. See Percentage difference between 20 and 50.

Practice

4 to 43
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From 4 to 43 is a 975% increase

84 to 70
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From 84 to 70 is a 16.6667% decrease

76 to 74
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From 76 to 74 is a 2.6316% decrease

48 to 47
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From 48 to 47 is a 2.0833% decrease

72 to 12
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From 72 to 12 is a 83.3333% decrease

79 to 41
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From 79 to 41 is a 48.1013% decrease

Calculate another

How answers are calculated and checked: methodology.

Questions

Percentage Change from 20 to 50

Going from 20 to 50 is a 150% increase. Formula and steps.

Is going from 20 to 50 an increase or a decrease?

An increase: the value grew by 30, which is 150% of the starting value.

What is the percentage change from 50 back to 20?

-60%. It is a different number because the starting value is now 50, not 20.