-96.03% is the change from 529 to 21
Calculation steps:
[( 21 - 529 ) ÷ 529] x 100 = -96.03%
Formula
Percentage change = [(21 - 529) / 529] x 100
Subtract the new number by the original number
21 - 529 = -508
-508 ÷ 529 = -0.9603024574669187
-0.9603024574669187 x 100 = -96.03%