-83.85% is the change from 879 to 142
Calculation steps:
[( 142 - 879 ) ÷ 879] x 100 = -83.85%
Formula
Percentage change = [(142 - 879) / 879] x 100
Subtract the new number by the original number
142 - 879 = -737
-737 ÷ 879 = -0.838452787258248
-0.838452787258248 x 100 = -83.85%