56.07% is the change from 305 to 476
Calculation steps:
[( 476 - 305 ) ÷ 305] x 100 = 56.07%
Formula
Percentage change = [(476 - 305) / 305] x 100
Subtract the new number by the original number
476 - 305 = 171
171 ÷ 305 = 0.5606557377049181
0.5606557377049181 x 100 = 56.07%