34.47% is the change from 618 to 831
Calculation steps:
[( 831 - 618 ) ÷ 618] x 100 = 34.47%
Formula
Percentage change = [(831 - 618) / 618] x 100
Subtract the new number by the original number
831 - 618 = 213
213 ÷ 618 = 0.3446601941747573
0.3446601941747573 x 100 = 34.47%