30.4% is the change from 658 to 858
Calculation steps:
[( 858 - 658 ) ÷ 658] x 100 = 30.4%
Formula
Percentage change = [(858 - 658) / 658] x 100
Subtract the new number by the original number
858 - 658 = 200
200 ÷ 658 = 0.303951367781155
0.303951367781155 x 100 = 30.4%