39% is the change from 600 to 834
Calculation steps:
[( 834 - 600 ) ÷ 600] x 100 = 39%
Formula
Percentage change = [(834 - 600) / 600] x 100
Subtract the new number by the original number
834 - 600 = 234
234 ÷ 600 = 0.39
0.39 x 100 = 39%
Example