18.97% is the change from 390 to 464
Calculation steps:
[( 464 - 390 ) ÷ 390] x 100 = 18.97%
Formula
Percentage change = [(464 - 390) / 390] x 100
Subtract the new number by the original number
464 - 390 = 74
74 ÷ 390 = 0.18974358974358974
0.18974358974358974 x 100 = 18.97%