-79.22% is the change from 770 to 160
Calculation steps:
[( 160 - 770 ) ÷ 770] x 100 = -79.22%
Formula
Percentage change = [(160 - 770) / 770] x 100
Subtract the new number by the original number
160 - 770 = -610
-610 ÷ 770 = -0.7922077922077922
-0.7922077922077922 x 100 = -79.22%