-43.78% is the change from 571 to 321
Calculation steps:
[( 321 - 571 ) ÷ 571] x 100 = -43.78%
Formula
Percentage change = [(321 - 571) / 571] x 100
Subtract the new number by the original number
321 - 571 = -250
-250 ÷ 571 = -0.43782837127845886
-0.43782837127845886 x 100 = -43.78%