-45.78% is the change from 581 to 315
Calculation steps:
[( 315 - 581 ) ÷ 581] x 100 = -45.78%
Formula
Percentage change = [(315 - 581) / 581] x 100
Subtract the new number by the original number
315 - 581 = -266
-266 ÷ 581 = -0.4578313253012048
-0.4578313253012048 x 100 = -45.78%