-28.25% is the change from 439 to 315
Calculation steps:
[( 315 - 439 ) ÷ 439] x 100 = -28.25%
Formula
Percentage change = [(315 - 439) / 439] x 100
Subtract the new number by the original number
315 - 439 = -124
-124 ÷ 439 = -0.2824601366742597
-0.2824601366742597 x 100 = -28.25%