-90.15% is the change from 680 to 67
Calculation steps:
[( 67 - 680 ) ÷ 680] x 100 = -90.15%
Formula
Percentage change = [(67 - 680) / 680] x 100
Subtract the new number by the original number
67 - 680 = -613
-613 ÷ 680 = -0.9014705882352941
-0.9014705882352941 x 100 = -90.15%