-97.06% is the change from 613 to 18
Calculation steps:
[( 18 - 613 ) ÷ 613] x 100 = -97.06%
Formula
Percentage change = [(18 - 613) / 613] x 100
Subtract the new number by the original number
18 - 613 = -595
-595 ÷ 613 = -0.9706362153344209
-0.9706362153344209 x 100 = -97.06%