3.28% is the change from 609 to 629
Calculation steps:
[( 629 - 609 ) ÷ 609] x 100 = 3.28%
Formula
Percentage change = [(629 - 609) / 609] x 100
Subtract the new number by the original number
629 - 609 = 20
20 ÷ 609 = 0.03284072249589491
0.03284072249589491 x 100 = 3.28%