-9.3% is the change from 968 to 878
Calculation steps:
[( 878 - 968 ) ÷ 968] x 100 = -9.3%
Formula
Percentage change = [(878 - 968) / 968] x 100
Subtract the new number by the original number
878 - 968 = -90
-90 ÷ 968 = -0.09297520661157024
-0.09297520661157024 x 100 = -9.3%