-9.22% is the change from 879 to 798
Calculation steps:
[( 798 - 879 ) ÷ 879] x 100 = -9.22%
Formula
Percentage change = [(798 - 879) / 879] x 100
Subtract the new number by the original number
798 - 879 = -81
-81 ÷ 879 = -0.09215017064846416
-0.09215017064846416 x 100 = -9.22%