-86.65% is the change from 397 to 53
Calculation steps:
[( 53 - 397 ) ÷ 397] x 100 = -86.65%
Formula
Percentage change = [(53 - 397) / 397] x 100
Subtract the new number by the original number
53 - 397 = -344
-344 ÷ 397 = -0.8664987405541562
-0.8664987405541562 x 100 = -86.65%