17.73% is the change from 609 to 717
Calculation steps:
[( 717 - 609 ) ÷ 609] x 100 = 17.73%
Formula
Percentage change = [(717 - 609) / 609] x 100
Subtract the new number by the original number
717 - 609 = 108
108 ÷ 609 = 0.17733990147783252
0.17733990147783252 x 100 = 17.73%