-50.35% is the change from 705 to 350
Calculation steps:
[( 350 - 705 ) ÷ 705] x 100 = -50.35%
Formula
Percentage change = [(350 - 705) / 705] x 100
Subtract the new number by the original number
350 - 705 = -355
-355 ÷ 705 = -0.5035460992907801
-0.5035460992907801 x 100 = -50.35%