25.31% is the change from 320 to 401
Calculation steps:
[( 401 - 320 ) ÷ 320] x 100 = 25.31%
Formula
Percentage change = [(401 - 320) / 320] x 100
Subtract the new number by the original number
401 - 320 = 81
81 ÷ 320 = 0.253125
0.253125 x 100 = 25.31%