46.47% is the change from 312 to 457
Calculation steps:
[( 457 - 312 ) ÷ 312] x 100 = 46.47%
Formula
Percentage change = [(457 - 312) / 312] x 100
Subtract the new number by the original number
457 - 312 = 145
145 ÷ 312 = 0.46474358974358976
0.46474358974358976 x 100 = 46.47%