-82.06% is the change from 680 to 122
Calculation steps:
[( 122 - 680 ) ÷ 680] x 100 = -82.06%
Formula
Percentage change = [(122 - 680) / 680] x 100
Subtract the new number by the original number
122 - 680 = -558
-558 ÷ 680 = -0.8205882352941176
-0.8205882352941176 x 100 = -82.06%