50% is the change from 310 to 465
Calculation steps:
[( 465 - 310 ) ÷ 310] x 100 = 50%
Formula
Percentage change = [(465 - 310) / 310] x 100
Subtract the new number by the original number
465 - 310 = 155
155 ÷ 310 = 0.5
0.5 x 100 = 50%
Example