-99.37% is the change from 319 to 2
Calculation steps:
[( 2 - 319 ) ÷ 319] x 100 = -99.37%
Formula
Percentage change = [(2 - 319) / 319] x 100
Subtract the new number by the original number
2 - 319 = -317
-317 ÷ 319 = -0.9937304075235109
-0.9937304075235109 x 100 = -99.37%