19.4% is the change from 397 to 474
Calculation steps:
[( 474 - 397 ) ÷ 397] x 100 = 19.4%
Formula
Percentage change = [(474 - 397) / 397] x 100
Subtract the new number by the original number
474 - 397 = 77
77 ÷ 397 = 0.19395465994962216
0.19395465994962216 x 100 = 19.4%