-48.21% is the change from 923 to 478
Calculation steps:
[( 478 - 923 ) ÷ 923] x 100 = -48.21%
Formula
Percentage change = [(478 - 923) / 923] x 100
Subtract the new number by the original number
478 - 923 = -445
-445 ÷ 923 = -0.48212351029252437
-0.48212351029252437 x 100 = -48.21%