38.04% is the change from 397 to 548
Calculation steps:
[( 548 - 397 ) ÷ 397] x 100 = 38.04%
Formula
Percentage change = [(548 - 397) / 397] x 100
Subtract the new number by the original number
548 - 397 = 151
151 ÷ 397 = 0.380352644836272
0.380352644836272 x 100 = 38.04%