-39.59% is the change from 677 to 409
Calculation steps:
[( 409 - 677 ) ÷ 677] x 100 = -39.59%
Formula
Percentage change = [(409 - 677) / 677] x 100
Subtract the new number by the original number
409 - 677 = -268
-268 ÷ 677 = -0.39586410635155095
-0.39586410635155095 x 100 = -39.59%