-97.24% is the change from 399 to 11
Calculation steps:
[( 11 - 399 ) ÷ 399] x 100 = -97.24%
Formula
Percentage change = [(11 - 399) / 399] x 100
Subtract the new number by the original number
11 - 399 = -388
-388 ÷ 399 = -0.9724310776942355
-0.9724310776942355 x 100 = -97.24%