24.4% is the change from 668 to 831
Calculation steps:
[( 831 - 668 ) ÷ 668] x 100 = 24.4%
Formula
Percentage change = [(831 - 668) / 668] x 100
Subtract the new number by the original number
831 - 668 = 163
163 ÷ 668 = 0.2440119760479042
0.2440119760479042 x 100 = 24.4%