-98.86% is the change from 613 to 7
Calculation steps:
[( 7 - 613 ) ÷ 613] x 100 = -98.86%
Formula
Percentage change = [(7 - 613) / 613] x 100
Subtract the new number by the original number
7 - 613 = -606
-606 ÷ 613 = -0.9885807504078303
-0.9885807504078303 x 100 = -98.86%