-29.23% is the change from 609 to 431
Calculation steps:
[( 431 - 609 ) ÷ 609] x 100 = -29.23%
Formula
Percentage change = [(431 - 609) / 609] x 100
Subtract the new number by the original number
431 - 609 = -178
-178 ÷ 609 = -0.2922824302134647
-0.2922824302134647 x 100 = -29.23%