-50.39% is the change from 907 to 450
Calculation steps:
[( 450 - 907 ) ÷ 907] x 100 = -50.39%
Formula
Percentage change = [(450 - 907) / 907] x 100
Subtract the new number by the original number
450 - 907 = -457
-457 ÷ 907 = -0.503858875413451
-0.503858875413451 x 100 = -50.39%