6.8% is the change from 647 to 691
Calculation steps:
[( 691 - 647 ) ÷ 647] x 100 = 6.8%
Formula
Percentage change = [(691 - 647) / 647] x 100
Subtract the new number by the original number
691 - 647 = 44
44 ÷ 647 = 0.06800618238021638
0.06800618238021638 x 100 = 6.8%