-98.28% is the change from 522 to 9
Calculation steps:
[( 9 - 522 ) ÷ 522] x 100 = -98.28%
Formula
Percentage change = [(9 - 522) / 522] x 100
Subtract the new number by the original number
9 - 522 = -513
-513 ÷ 522 = -0.9827586206896551
-0.9827586206896551 x 100 = -98.28%