-99.31% is the change from 290 to 2
Calculation steps:
[( 2 - 290 ) ÷ 290] x 100 = -99.31%
Formula
Percentage change = [(2 - 290) / 290] x 100
Subtract the new number by the original number
2 - 290 = -288
-288 ÷ 290 = -0.993103448275862
-0.993103448275862 x 100 = -99.31%