19.7% is the change from 609 to 729
Calculation steps:
[( 729 - 609 ) ÷ 609] x 100 = 19.7%
Formula
Percentage change = [(729 - 609) / 609] x 100
Subtract the new number by the original number
729 - 609 = 120
120 ÷ 609 = 0.19704433497536947
0.19704433497536947 x 100 = 19.7%