19.49% is the change from 390 to 466
Calculation steps:
[( 466 - 390 ) ÷ 390] x 100 = 19.49%
Formula
Percentage change = [(466 - 390) / 390] x 100
Subtract the new number by the original number
466 - 390 = 76
76 ÷ 390 = 0.19487179487179487
0.19487179487179487 x 100 = 19.49%