-50.17% is the change from 901 to 449
Calculation steps:
[( 449 - 901 ) ÷ 901] x 100 = -50.17%
Formula
Percentage change = [(449 - 901) / 901] x 100
Subtract the new number by the original number
449 - 901 = -452
-452 ÷ 901 = -0.5016648168701443
-0.5016648168701443 x 100 = -50.17%