43.78% is the change from 571 to 821
Calculation steps:
[( 821 - 571 ) ÷ 571] x 100 = 43.78%
Formula
Percentage change = [(821 - 571) / 571] x 100
Subtract the new number by the original number
821 - 571 = 250
250 ÷ 571 = 0.43782837127845886
0.43782837127845886 x 100 = 43.78%