-48.34% is the change from 871 to 450
Calculation steps:
[( 450 - 871 ) ÷ 871] x 100 = -48.34%
Formula
Percentage change = [(450 - 871) / 871] x 100
Subtract the new number by the original number
450 - 871 = -421
-421 ÷ 871 = -0.4833524684270953
-0.4833524684270953 x 100 = -48.34%