-96.68% is the change from 331 to 11
Calculation steps:
[( 11 - 331 ) ÷ 331] x 100 = -96.68%
Formula
Percentage change = [(11 - 331) / 331] x 100
Subtract the new number by the original number
11 - 331 = -320
-320 ÷ 331 = -0.9667673716012085
-0.9667673716012085 x 100 = -96.68%