23.65% is the change from 668 to 826
Calculation steps:
[( 826 - 668 ) ÷ 668] x 100 = 23.65%
Formula
Percentage change = [(826 - 668) / 668] x 100
Subtract the new number by the original number
826 - 668 = 158
158 ÷ 668 = 0.23652694610778444
0.23652694610778444 x 100 = 23.65%