-99.68% is the change from 617 to 2
Calculation steps:
[( 2 - 617 ) ÷ 617] x 100 = -99.68%
Formula
Percentage change = [(2 - 617) / 617] x 100
Subtract the new number by the original number
2 - 617 = -615
-615 ÷ 617 = -0.9967585089141004
-0.9967585089141004 x 100 = -99.68%