9.75% is the change from 646 to 709
Calculation steps:
[( 709 - 646 ) ÷ 646] x 100 = 9.75%
Formula
Percentage change = [(709 - 646) / 646] x 100
Subtract the new number by the original number
709 - 646 = 63
63 ÷ 646 = 0.09752321981424149
0.09752321981424149 x 100 = 9.75%