19.59% is the change from 439 to 525
Calculation steps:
[( 525 - 439 ) ÷ 439] x 100 = 19.59%
Formula
Percentage change = [(525 - 439) / 439] x 100
Subtract the new number by the original number
525 - 439 = 86
86 ÷ 439 = 0.1958997722095672
0.1958997722095672 x 100 = 19.59%