-11.28% is the change from 878 to 779
Calculation steps:
[( 779 - 878 ) ÷ 878] x 100 = -11.28%
Formula
Percentage change = [(779 - 878) / 878] x 100
Subtract the new number by the original number
779 - 878 = -99
-99 ÷ 878 = -0.11275626423690205
-0.11275626423690205 x 100 = -11.28%