-53.09% is the change from 921 to 432
Calculation steps:
[( 432 - 921 ) ÷ 921] x 100 = -53.09%
Formula
Percentage change = [(432 - 921) / 921] x 100
Subtract the new number by the original number
432 - 921 = -489
-489 ÷ 921 = -0.5309446254071661
-0.5309446254071661 x 100 = -53.09%