35.5% is the change from 600 to 813
Calculation steps:
[( 813 - 600 ) ÷ 600] x 100 = 35.5%
Formula
Percentage change = [(813 - 600) / 600] x 100
Subtract the new number by the original number
813 - 600 = 213
213 ÷ 600 = 0.355
0.355 x 100 = 35.5%
Example