-30.76% is the change from 621 to 430
Calculation steps:
[( 430 - 621 ) ÷ 621] x 100 = -30.76%
Formula
Percentage change = [(430 - 621) / 621] x 100
Subtract the new number by the original number
430 - 621 = -191
-191 ÷ 621 = -0.3075684380032206
-0.3075684380032206 x 100 = -30.76%