-79.09% is the change from 397 to 83
Calculation steps:
[( 83 - 397 ) ÷ 397] x 100 = -79.09%
Formula
Percentage change = [(83 - 397) / 397] x 100
Subtract the new number by the original number
83 - 397 = -314
-314 ÷ 397 = -0.7909319899244333
-0.7909319899244333 x 100 = -79.09%