34.31% is the change from 306 to 411
Calculation steps:
[( 411 - 306 ) ÷ 306] x 100 = 34.31%
Formula
Percentage change = [(411 - 306) / 306] x 100
Subtract the new number by the original number
411 - 306 = 105
105 ÷ 306 = 0.3431372549019608
0.3431372549019608 x 100 = 34.31%