-81.68% is the change from 677 to 124
Calculation steps:
[( 124 - 677 ) ÷ 677] x 100 = -81.68%
Formula
Percentage change = [(124 - 677) / 677] x 100
Subtract the new number by the original number
124 - 677 = -553
-553 ÷ 677 = -0.8168389955686853
-0.8168389955686853 x 100 = -81.68%