40.2% is the change from 592 to 830
Calculation steps:
[( 830 - 592 ) ÷ 592] x 100 = 40.2%
Formula
Percentage change = [(830 - 592) / 592] x 100
Subtract the new number by the original number
830 - 592 = 238
238 ÷ 592 = 0.40202702702702703
0.40202702702702703 x 100 = 40.2%