20.27% is the change from 439 to 528
Calculation steps:
[( 528 - 439 ) ÷ 439] x 100 = 20.27%
Formula
Percentage change = [(528 - 439) / 439] x 100
Subtract the new number by the original number
528 - 439 = 89
89 ÷ 439 = 0.20273348519362186
0.20273348519362186 x 100 = 20.27%