-8.3% is the change from 879 to 806
Calculation steps:
[( 806 - 879 ) ÷ 879] x 100 = -8.3%
Formula
Percentage change = [(806 - 879) / 879] x 100
Subtract the new number by the original number
806 - 879 = -73
-73 ÷ 879 = -0.08304891922639362
-0.08304891922639362 x 100 = -8.3%