5.88% is the change from 646 to 684
Calculation steps:
[( 684 - 646 ) ÷ 646] x 100 = 5.88%
Formula
Percentage change = [(684 - 646) / 646] x 100
Subtract the new number by the original number
684 - 646 = 38
38 ÷ 646 = 0.058823529411764705
0.058823529411764705 x 100 = 5.88%