-48.28% is the change from 609 to 315
Calculation steps:
[( 315 - 609 ) ÷ 609] x 100 = -48.28%
Formula
Percentage change = [(315 - 609) / 609] x 100
Subtract the new number by the original number
315 - 609 = -294
-294 ÷ 609 = -0.4827586206896552
-0.4827586206896552 x 100 = -48.28%