-99.24% is the change from 393 to 3
Calculation steps:
[( 3 - 393 ) ÷ 393] x 100 = -99.24%
Formula
Percentage change = [(3 - 393) / 393] x 100
Subtract the new number by the original number
3 - 393 = -390
-390 ÷ 393 = -0.9923664122137404
-0.9923664122137404 x 100 = -99.24%