-99.67% is the change from 610 to 2
Calculation steps:
[( 2 - 610 ) ÷ 610] x 100 = -99.67%
Formula
Percentage change = [(2 - 610) / 610] x 100
Subtract the new number by the original number
2 - 610 = -608
-608 ÷ 610 = -0.9967213114754099
-0.9967213114754099 x 100 = -99.67%