-98.52% is the change from 607 to 9
Calculation steps:
[( 9 - 607 ) ÷ 607] x 100 = -98.52%
Formula
Percentage change = [(9 - 607) / 607] x 100
Subtract the new number by the original number
9 - 607 = -598
-598 ÷ 607 = -0.985172981878089
-0.985172981878089 x 100 = -98.52%