-97.31% is the change from 409 to 11
Calculation steps:
[( 11 - 409 ) ÷ 409] x 100 = -97.31%
Formula
Percentage change = [(11 - 409) / 409] x 100
Subtract the new number by the original number
11 - 409 = -398
-398 ÷ 409 = -0.9731051344743277
-0.9731051344743277 x 100 = -97.31%