-75.29% is the change from 680 to 168
Calculation steps:
[( 168 - 680 ) ÷ 680] x 100 = -75.29%
Formula
Percentage change = [(168 - 680) / 680] x 100
Subtract the new number by the original number
168 - 680 = -512
-512 ÷ 680 = -0.7529411764705882
-0.7529411764705882 x 100 = -75.29%