-30.03% is the change from 393 to 275
Calculation steps:
[( 275 - 393 ) ÷ 393] x 100 = -30.03%
Formula
Percentage change = [(275 - 393) / 393] x 100
Subtract the new number by the original number
275 - 393 = -118
-118 ÷ 393 = -0.30025445292620867
-0.30025445292620867 x 100 = -30.03%