14% is the change from 400 to 456
Calculation steps:
[( 456 - 400 ) ÷ 400] x 100 = 14%
Formula
Percentage change = [(456 - 400) / 400] x 100
Subtract the new number by the original number
456 - 400 = 56
56 ÷ 400 = 0.14
0.14 x 100 = 14%
Example