31.89% is the change from 439 to 579
Calculation steps:
[( 579 - 439 ) ÷ 439] x 100 = 31.89%
Formula
Percentage change = [(579 - 439) / 439] x 100
Subtract the new number by the original number
579 - 439 = 140
140 ÷ 439 = 0.31890660592255127
0.31890660592255127 x 100 = 31.89%