-88.4% is the change from 879 to 102
Calculation steps:
[( 102 - 879 ) ÷ 879] x 100 = -88.4%
Formula
Percentage change = [(102 - 879) / 879] x 100
Subtract the new number by the original number
102 - 879 = -777
-777 ÷ 879 = -0.8839590443686007
-0.8839590443686007 x 100 = -88.4%