-78.66% is the change from 389 to 83
Calculation steps:
[( 83 - 389 ) ÷ 389] x 100 = -78.66%
Formula
Percentage change = [(83 - 389) / 389] x 100
Subtract the new number by the original number
83 - 389 = -306
-306 ÷ 389 = -0.7866323907455013
-0.7866323907455013 x 100 = -78.66%