-48.04% is the change from 866 to 450
Calculation steps:
[( 450 - 866 ) ÷ 866] x 100 = -48.04%
Formula
Percentage change = [(450 - 866) / 866] x 100
Subtract the new number by the original number
450 - 866 = -416
-416 ÷ 866 = -0.48036951501154734
-0.48036951501154734 x 100 = -48.04%