-42.83% is the change from 621 to 355
Calculation steps:
[( 355 - 621 ) ÷ 621] x 100 = -42.83%
Formula
Percentage change = [(355 - 621) / 621] x 100
Subtract the new number by the original number
355 - 621 = -266
-266 ÷ 621 = -0.428341384863124
-0.428341384863124 x 100 = -42.83%