-30.43% is the change from 621 to 432
Calculation steps:
[( 432 - 621 ) ÷ 621] x 100 = -30.43%
Formula
Percentage change = [(432 - 621) / 621] x 100
Subtract the new number by the original number
432 - 621 = -189
-189 ÷ 621 = -0.30434782608695654
-0.30434782608695654 x 100 = -30.43%