-86.26% is the change from 604 to 83
Calculation steps:
[( 83 - 604 ) ÷ 604] x 100 = -86.26%
Formula
Percentage change = [(83 - 604) / 604] x 100
Subtract the new number by the original number
83 - 604 = -521
-521 ÷ 604 = -0.8625827814569537
-0.8625827814569537 x 100 = -86.26%