-98.22% is the change from 393 to 7
Calculation steps:
[( 7 - 393 ) ÷ 393] x 100 = -98.22%
Formula
Percentage change = [(7 - 393) / 393] x 100
Subtract the new number by the original number
7 - 393 = -386
-386 ÷ 393 = -0.9821882951653944
-0.9821882951653944 x 100 = -98.22%