49.2% is the change from 311 to 464
Calculation steps:
[( 464 - 311 ) ÷ 311] x 100 = 49.2%
Formula
Percentage change = [(464 - 311) / 311] x 100
Subtract the new number by the original number
464 - 311 = 153
153 ÷ 311 = 0.4919614147909968
0.4919614147909968 x 100 = 49.2%