-42.35% is the change from 673 to 388
Calculation steps:
[( 388 - 673 ) ÷ 673] x 100 = -42.35%
Formula
Percentage change = [(388 - 673) / 673] x 100
Subtract the new number by the original number
388 - 673 = -285
-285 ÷ 673 = -0.4234769687964339
-0.4234769687964339 x 100 = -42.35%