317.12% is the change from 146 to 609
Calculation steps:
[( 609 - 146 ) ÷ 146] x 100 = 317.12%
Formula
Percentage change = [(609 - 146) / 146] x 100
Subtract the new number by the original number
609 - 146 = 463
463 ÷ 146 = 3.171232876712329
3.171232876712329 x 100 = 317.12%