-44.84% is the change from 921 to 508
Calculation steps:
[( 508 - 921 ) ÷ 921] x 100 = -44.84%
Formula
Percentage change = [(508 - 921) / 921] x 100
Subtract the new number by the original number
508 - 921 = -413
-413 ÷ 921 = -0.44842562432138977
-0.44842562432138977 x 100 = -44.84%