Question

What is the percent change of 19 to 9?

Answer 1

percentage decrease = 52.63%(2 decimal places)

Explanation:

The change in value here is a decrease as

as `19to9=19-9=10" of a decrease"`

To express this as a percentage , write the decrease (10) as a fraction of the original quantity (19) and multiply by 100.

percentage decrease `=10/19xx100/1=(10xx100)/(19xx1)`

`=1000/19=52.63%" (to 2 decimal places)"`

Answer 2

`= 52.6%`

Explanation:

The percent change from 19 to 9 is the same as the percent change from 19 to 29 because they both involve the same portion of 19.

Find the amount of change, the difference between the two values - it does not matter if it is an increase or decrease.

`19-9 = 10" and " 29 -19 = 10"`

The percent change is calculated from:

`"change"/"original amount" xx 100%`

`10/19 xx 100%`

`= 52.6%`

From 19 to 9 is a 52.6% decrease, from 19 to 29 is a 52.6% increase because they both involve a change of 10 out of 19.