28.94% is the change from 311 to 401
Calculation steps:
[( 401 - 311 ) ÷ 311] x 100 = 28.94%
Formula
Percentage change = [(401 - 311) / 311] x 100
Subtract the new number by the original number
401 - 311 = 90
90 ÷ 311 = 0.28938906752411575
0.28938906752411575 x 100 = 28.94%