52.73% is the change from 311 to 475
Calculation steps:
[( 475 - 311 ) ÷ 311] x 100 = 52.73%
Formula
Percentage change = [(475 - 311) / 311] x 100
Subtract the new number by the original number
475 - 311 = 164
164 ÷ 311 = 0.5273311897106109
0.5273311897106109 x 100 = 52.73%