-4.9% is the change from 878 to 835
Calculation steps:
[( 835 - 878 ) ÷ 878] x 100 = -4.9%
Formula
Percentage change = [(835 - 878) / 878] x 100
Subtract the new number by the original number
835 - 878 = -43
-43 ÷ 878 = -0.0489749430523918
-0.0489749430523918 x 100 = -4.9%