-97.19% is the change from 391 to 11
Calculation steps:
[( 11 - 391 ) ÷ 391] x 100 = -97.19%
Formula
Percentage change = [(11 - 391) / 391] x 100
Subtract the new number by the original number
11 - 391 = -380
-380 ÷ 391 = -0.9718670076726342
-0.9718670076726342 x 100 = -97.19%