20.79% is the change from 529 to 639
Calculation steps:
[( 639 - 529 ) ÷ 529] x 100 = 20.79%
Formula
Percentage change = [(639 - 529) / 529] x 100
Subtract the new number by the original number
639 - 529 = 110
110 ÷ 529 = 0.20793950850661624
0.20793950850661624 x 100 = 20.79%