164.71% is the change from 306 to 810
Calculation steps:
[( 810 - 306 ) ÷ 306] x 100 = 164.71%
Formula
Percentage change = [(810 - 306) / 306] x 100
Subtract the new number by the original number
810 - 306 = 504
504 ÷ 306 = 1.6470588235294117
1.6470588235294117 x 100 = 164.71%