14.25% is the change from 400 to 457
Calculation steps:
[( 457 - 400 ) ÷ 400] x 100 = 14.25%
Formula
Percentage change = [(457 - 400) / 400] x 100
Subtract the new number by the original number
457 - 400 = 57
57 ÷ 400 = 0.1425
0.1425 x 100 = 14.25%
Example