-96.98% is the change from 397 to 12
Calculation steps:
[( 12 - 397 ) ÷ 397] x 100 = -96.98%
Formula
Percentage change = [(12 - 397) / 397] x 100
Subtract the new number by the original number
12 - 397 = -385
-385 ÷ 397 = -0.9697732997481109
-0.9697732997481109 x 100 = -96.98%