-7.74% is the change from 879 to 811
Calculation steps:
[( 811 - 879 ) ÷ 879] x 100 = -7.74%
Formula
Percentage change = [(811 - 879) / 879] x 100
Subtract the new number by the original number
811 - 879 = -68
-68 ÷ 879 = -0.07736063708759955
-0.07736063708759955 x 100 = -7.74%