What is the percent change of 19 to 9?

2 Answers
Jun 20, 2016

Answer:

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)"#

Jun 20, 2016

Answer:

#= 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.