67% is the change from 497 to 830
Calculation steps:
[( 830 - 497 ) ÷ 497] x 100 = 67%
Formula
Percentage change = [(830 - 497) / 497] x 100
Subtract the new number by the original number
830 - 497 = 333
333 ÷ 497 = 0.670020120724346
0.670020120724346 x 100 = 67%