53.07% is the change from 309 to 473
Calculation steps:
[( 473 - 309 ) ÷ 309] x 100 = 53.07%
Formula
Percentage change = [(473 - 309) / 309] x 100
Subtract the new number by the original number
473 - 309 = 164
164 ÷ 309 = 0.5307443365695793
0.5307443365695793 x 100 = 53.07%