5.26% is the change from 646 to 680
Calculation steps:
[( 680 - 646 ) ÷ 646] x 100 = 5.26%
Formula
Percentage change = [(680 - 646) / 646] x 100
Subtract the new number by the original number
680 - 646 = 34
34 ÷ 646 = 0.05263157894736842
0.05263157894736842 x 100 = 5.26%