35.4% is the change from 613 to 830
Calculation steps:
[( 830 - 613 ) ÷ 613] x 100 = 35.4%
Formula
Percentage change = [(830 - 613) / 613] x 100
Subtract the new number by the original number
830 - 613 = 217
217 ÷ 613 = 0.3539967373572594
0.3539967373572594 x 100 = 35.4%