55.56% is the change from 306 to 476
Calculation steps:
[( 476 - 306 ) ÷ 306] x 100 = 55.56%
Formula
Percentage change = [(476 - 306) / 306] x 100
Subtract the new number by the original number
476 - 306 = 170
170 ÷ 306 = 0.5555555555555556
0.5555555555555556 x 100 = 55.56%