5.1% is the change from 647 to 680
Calculation steps:
[( 680 - 647 ) ÷ 647] x 100 = 5.1%
Formula
Percentage change = [(680 - 647) / 647] x 100
Subtract the new number by the original number
680 - 647 = 33
33 ÷ 647 = 0.05100463678516229
0.05100463678516229 x 100 = 5.1%