-99.09% is the change from 879 to 8
Calculation steps:
[( 8 - 879 ) ÷ 879] x 100 = -99.09%
Formula
Percentage change = [(8 - 879) / 879] x 100
Subtract the new number by the original number
8 - 879 = -871
-871 ÷ 879 = -0.9908987485779295
-0.9908987485779295 x 100 = -99.09%