-95.47% is the change from 397 to 18
Calculation steps:
[( 18 - 397 ) ÷ 397] x 100 = -95.47%
Formula
Percentage change = [(18 - 397) / 397] x 100
Subtract the new number by the original number
18 - 397 = -379
-379 ÷ 397 = -0.9546599496221663
-0.9546599496221663 x 100 = -95.47%