31.9% is the change from 464 to 612
Calculation steps:
[( 612 - 464 ) ÷ 464] x 100 = 31.9%
Formula
Percentage change = [(612 - 464) / 464] x 100
Subtract the new number by the original number
612 - 464 = 148
148 ÷ 464 = 0.31896551724137934
0.31896551724137934 x 100 = 31.9%