261.4% is the change from 171 to 618
Calculation steps:
[( 618 - 171 ) ÷ 171] x 100 = 261.4%
Formula
Percentage change = [(618 - 171) / 171] x 100
Subtract the new number by the original number
618 - 171 = 447
447 ÷ 171 = 2.6140350877192984
2.6140350877192984 x 100 = 261.4%