43.61% is the change from 571 to 820
Calculation steps:
[( 820 - 571 ) ÷ 571] x 100 = 43.61%
Formula
Percentage change = [(820 - 571) / 571] x 100
Subtract the new number by the original number
820 - 571 = 249
249 ÷ 571 = 0.436077057793345
0.436077057793345 x 100 = 43.61%