9.39% is the change from 607 to 664
Calculation steps:
[( 664 - 607 ) ÷ 607] x 100 = 9.39%
Formula
Percentage change = [(664 - 607) / 607] x 100
Subtract the new number by the original number
664 - 607 = 57
57 ÷ 607 = 0.09390444810543658
0.09390444810543658 x 100 = 9.39%