-8.77% is the change from 878 to 801
Calculation steps:
[( 801 - 878 ) ÷ 878] x 100 = -8.77%
Formula
Percentage change = [(801 - 878) / 878] x 100
Subtract the new number by the original number
801 - 878 = -77
-77 ÷ 878 = -0.08769931662870159
-0.08769931662870159 x 100 = -8.77%