-52.2% is the change from 659 to 315
Calculation steps:
[( 315 - 659 ) ÷ 659] x 100 = -52.2%
Formula
Percentage change = [(315 - 659) / 659] x 100
Subtract the new number by the original number
315 - 659 = -344
-344 ÷ 659 = -0.5220030349013657
-0.5220030349013657 x 100 = -52.2%