-81.87% is the change from 673 to 122
Calculation steps:
[( 122 - 673 ) ÷ 673] x 100 = -81.87%
Formula
Percentage change = [(122 - 673) / 673] x 100
Subtract the new number by the original number
122 - 673 = -551
-551 ÷ 673 = -0.8187221396731055
-0.8187221396731055 x 100 = -81.87%