9.61% is the change from 583 to 639
Calculation steps:
[( 639 - 583 ) ÷ 583] x 100 = 9.61%
Formula
Percentage change = [(639 - 583) / 583] x 100
Subtract the new number by the original number
639 - 583 = 56
56 ÷ 583 = 0.09605488850771869
0.09605488850771869 x 100 = 9.61%