-3.31% is the change from 393 to 380
Calculation steps:
[( 380 - 393 ) ÷ 393] x 100 = -3.31%
Formula
Percentage change = [(380 - 393) / 393] x 100
Subtract the new number by the original number
380 - 393 = -13
-13 ÷ 393 = -0.03307888040712468
-0.03307888040712468 x 100 = -3.31%