153.05% is the change from 328 to 830
Calculation steps:
[( 830 - 328 ) ÷ 328] x 100 = 153.05%
Formula
Percentage change = [(830 - 328) / 328] x 100
Subtract the new number by the original number
830 - 328 = 502
502 ÷ 328 = 1.5304878048780488
1.5304878048780488 x 100 = 153.05%