-96.6% is the change from 529 to 18
Calculation steps:
[( 18 - 529 ) ÷ 529] x 100 = -96.6%
Formula
Percentage change = [(18 - 529) / 529] x 100
Subtract the new number by the original number
18 - 529 = -511
-511 ÷ 529 = -0.9659735349716446
-0.9659735349716446 x 100 = -96.6%