-76.47% is the change from 680 to 160
Calculation steps:
[( 160 - 680 ) ÷ 680] x 100 = -76.47%
Formula
Percentage change = [(160 - 680) / 680] x 100
Subtract the new number by the original number
160 - 680 = -520
-520 ÷ 680 = -0.7647058823529411
-0.7647058823529411 x 100 = -76.47%