-40.03% is the change from 677 to 406
Calculation steps:
[( 406 - 677 ) ÷ 677] x 100 = -40.03%
Formula
Percentage change = [(406 - 677) / 677] x 100
Subtract the new number by the original number
406 - 677 = -271
-271 ÷ 677 = -0.40029542097488924
-0.40029542097488924 x 100 = -40.03%