20.73% is the change from 521 to 629
Calculation steps:
[( 629 - 521 ) ÷ 521] x 100 = 20.73%
Formula
Percentage change = [(629 - 521) / 521] x 100
Subtract the new number by the original number
629 - 521 = 108
108 ÷ 521 = 0.2072936660268714
0.2072936660268714 x 100 = 20.73%