-8.45% is the change from 959 to 878
Calculation steps:
[( 878 - 959 ) ÷ 959] x 100 = -8.45%
Formula
Percentage change = [(878 - 959) / 959] x 100
Subtract the new number by the original number
878 - 959 = -81
-81 ÷ 959 = -0.08446298227320125
-0.08446298227320125 x 100 = -8.45%