-98.28% is the change from 523 to 9
Calculation steps:
[( 9 - 523 ) ÷ 523] x 100 = -98.28%
Formula
Percentage change = [(9 - 523) / 523] x 100
Subtract the new number by the original number
9 - 523 = -514
-514 ÷ 523 = -0.982791586998088
-0.982791586998088 x 100 = -98.28%