-21.19% is the change from 571 to 450
Calculation steps:
[( 450 - 571 ) ÷ 571] x 100 = -21.19%
Formula
Percentage change = [(450 - 571) / 571] x 100
Subtract the new number by the original number
450 - 571 = -121
-121 ÷ 571 = -0.2119089316987741
-0.2119089316987741 x 100 = -21.19%