67.34% is the change from 496 to 830
Calculation steps:
[( 830 - 496 ) ÷ 496] x 100 = 67.34%
Formula
Percentage change = [(830 - 496) / 496] x 100
Subtract the new number by the original number
830 - 496 = 334
334 ÷ 496 = 0.6733870967741935
0.6733870967741935 x 100 = 67.34%