27.2% is the change from 397 to 505
Calculation steps:
[( 505 - 397 ) ÷ 397] x 100 = 27.2%
Formula
Percentage change = [(505 - 397) / 397] x 100
Subtract the new number by the original number
505 - 397 = 108
108 ÷ 397 = 0.27204030226700254
0.27204030226700254 x 100 = 27.2%