-47.62% is the change from 609 to 319
Calculation steps:
[( 319 - 609 ) ÷ 609] x 100 = -47.62%
Formula
Percentage change = [(319 - 609) / 609] x 100
Subtract the new number by the original number
319 - 609 = -290
-290 ÷ 609 = -0.47619047619047616
-0.47619047619047616 x 100 = -47.62%