33.01% is the change from 306 to 407
Calculation steps:
[( 407 - 306 ) ÷ 306] x 100 = 33.01%
Formula
Percentage change = [(407 - 306) / 306] x 100
Subtract the new number by the original number
407 - 306 = 101
101 ÷ 306 = 0.3300653594771242
0.3300653594771242 x 100 = 33.01%