16.5% is the change from 400 to 466
Calculation steps:
[( 466 - 400 ) ÷ 400] x 100 = 16.5%
Formula
Percentage change = [(466 - 400) / 400] x 100
Subtract the new number by the original number
466 - 400 = 66
66 ÷ 400 = 0.165
0.165 x 100 = 16.5%
Example