-50.28% is the change from 905 to 450
Calculation steps:
[( 450 - 905 ) ÷ 905] x 100 = -50.28%
Formula
Percentage change = [(450 - 905) / 905] x 100
Subtract the new number by the original number
450 - 905 = -455
-455 ÷ 905 = -0.5027624309392266
-0.5027624309392266 x 100 = -50.28%