39.74% is the change from 609 to 851
Calculation steps:
[( 851 - 609 ) ÷ 609] x 100 = 39.74%
Formula
Percentage change = [(851 - 609) / 609] x 100
Subtract the new number by the original number
851 - 609 = 242
242 ÷ 609 = 0.3973727422003284
0.3973727422003284 x 100 = 39.74%