30.07% is the change from 439 to 571
Calculation steps:
[( 571 - 439 ) ÷ 439] x 100 = 30.07%
Formula
Percentage change = [(571 - 439) / 439] x 100
Subtract the new number by the original number
571 - 439 = 132
132 ÷ 439 = 0.30068337129840544
0.30068337129840544 x 100 = 30.07%