39.62% is the change from 583 to 814
Calculation steps:
[( 814 - 583 ) ÷ 583] x 100 = 39.62%
Formula
Percentage change = [(814 - 583) / 583] x 100
Subtract the new number by the original number
814 - 583 = 231
231 ÷ 583 = 0.39622641509433965
0.39622641509433965 x 100 = 39.62%