-99.67% is the change from 609 to 2
Calculation steps:
[( 2 - 609 ) ÷ 609] x 100 = -99.67%
Formula
Percentage change = [(2 - 609) / 609] x 100
Subtract the new number by the original number
2 - 609 = -607
-607 ÷ 609 = -0.9967159277504105
-0.9967159277504105 x 100 = -99.67%