-19.21% is the change from 609 to 492
Calculation steps:
[( 492 - 609 ) ÷ 609] x 100 = -19.21%
Formula
Percentage change = [(492 - 609) / 609] x 100
Subtract the new number by the original number
492 - 609 = -117
-117 ÷ 609 = -0.1921182266009852
-0.1921182266009852 x 100 = -19.21%