39.9% is the change from 609 to 852
Calculation steps:
[( 852 - 609 ) ÷ 609] x 100 = 39.9%
Formula
Percentage change = [(852 - 609) / 609] x 100
Subtract the new number by the original number
852 - 609 = 243
243 ÷ 609 = 0.39901477832512317
0.39901477832512317 x 100 = 39.9%