-80.93% is the change from 839 to 160
Calculation steps:
[( 160 - 839 ) ÷ 839] x 100 = -80.93%
Formula
Percentage change = [(160 - 839) / 839] x 100
Subtract the new number by the original number
160 - 839 = -679
-679 ÷ 839 = -0.8092967818831943
-0.8092967818831943 x 100 = -80.93%