35.14% is the change from 609 to 823
Calculation steps:
[( 823 - 609 ) ÷ 609] x 100 = 35.14%
Formula
Percentage change = [(823 - 609) / 609] x 100
Subtract the new number by the original number
823 - 609 = 214
214 ÷ 609 = 0.35139573070607555
0.35139573070607555 x 100 = 35.14%