7.38% is the change from 637 to 684
Calculation steps:
[( 684 - 637 ) ÷ 637] x 100 = 7.38%
Formula
Percentage change = [(684 - 637) / 637] x 100
Subtract the new number by the original number
684 - 637 = 47
47 ÷ 637 = 0.07378335949764521
0.07378335949764521 x 100 = 7.38%