-88.56% is the change from 673 to 77
Calculation steps:
[( 77 - 673 ) ÷ 673] x 100 = -88.56%
Formula
Percentage change = [(77 - 673) / 673] x 100
Subtract the new number by the original number
77 - 673 = -596
-596 ÷ 673 = -0.8855869242199108
-0.8855869242199108 x 100 = -88.56%