-47.37% is the change from 665 to 350
Calculation steps:
[( 350 - 665 ) ÷ 665] x 100 = -47.37%
Formula
Percentage change = [(350 - 665) / 665] x 100
Subtract the new number by the original number
350 - 665 = -315
-315 ÷ 665 = -0.47368421052631576
-0.47368421052631576 x 100 = -47.37%