-84.31% is the change from 529 to 83
Calculation steps:
[( 83 - 529 ) ÷ 529] x 100 = -84.31%
Formula
Percentage change = [(83 - 529) / 529] x 100
Subtract the new number by the original number
83 - 529 = -446
-446 ÷ 529 = -0.8431001890359168
-0.8431001890359168 x 100 = -84.31%