12.68% is the change from 355 to 400
Calculation steps:
[( 400 - 355 ) ÷ 355] x 100 = 12.68%
Formula
Percentage change = [(400 - 355) / 355] x 100
Subtract the new number by the original number
400 - 355 = 45
45 ÷ 355 = 0.1267605633802817
0.1267605633802817 x 100 = 12.68%