13% is the change from 400 to 452
Calculation steps:
[( 452 - 400 ) ÷ 400] x 100 = 13%
Formula
Percentage change = [(452 - 400) / 400] x 100
Subtract the new number by the original number
452 - 400 = 52
52 ÷ 400 = 0.13
0.13 x 100 = 13%
Example