55.67% is the change from 397 to 618
Calculation steps:
[( 618 - 397 ) ÷ 397] x 100 = 55.67%
Formula
Percentage change = [(618 - 397) / 397] x 100
Subtract the new number by the original number
618 - 397 = 221
221 ÷ 397 = 0.5566750629722922
0.5566750629722922 x 100 = 55.67%