-30.27% is the change from 621 to 433
Calculation steps:
[( 433 - 621 ) ÷ 621] x 100 = -30.27%
Formula
Percentage change = [(433 - 621) / 621] x 100
Subtract the new number by the original number
433 - 621 = -188
-188 ÷ 621 = -0.3027375201288245
-0.3027375201288245 x 100 = -30.27%