165.69% is the change from 306 to 813
Calculation steps:
[( 813 - 306 ) ÷ 306] x 100 = 165.69%
Formula
Percentage change = [(813 - 306) / 306] x 100
Subtract the new number by the original number
813 - 306 = 507
507 ÷ 306 = 1.6568627450980393
1.6568627450980393 x 100 = 165.69%