6.24% is the change from 609 to 647
Calculation steps:
[( 647 - 609 ) ÷ 609] x 100 = 6.24%
Formula
Percentage change = [(647 - 609) / 609] x 100
Subtract the new number by the original number
647 - 609 = 38
38 ÷ 609 = 0.06239737274220033
0.06239737274220033 x 100 = 6.24%