-98.53% is the change from 613 to 9
Calculation steps:
[( 9 - 613 ) ÷ 613] x 100 = -98.53%
Formula
Percentage change = [(9 - 613) / 613] x 100
Subtract the new number by the original number
9 - 613 = -604
-604 ÷ 613 = -0.9853181076672104
-0.9853181076672104 x 100 = -98.53%