50.74% is the change from 609 to 918
Calculation steps:
[( 918 - 609 ) ÷ 609] x 100 = 50.74%
Formula
Percentage change = [(918 - 609) / 609] x 100
Subtract the new number by the original number
918 - 609 = 309
309 ÷ 609 = 0.5073891625615764
0.5073891625615764 x 100 = 50.74%