-50.06% is the change from 901 to 450
Calculation steps:
[( 450 - 901 ) ÷ 901] x 100 = -50.06%
Formula
Percentage change = [(450 - 901) / 901] x 100
Subtract the new number by the original number
450 - 901 = -451
-451 ÷ 901 = -0.5005549389567148
-0.5005549389567148 x 100 = -50.06%