-93.79% is the change from 290 to 18
Calculation steps:
[( 18 - 290 ) ÷ 290] x 100 = -93.79%
Formula
Percentage change = [(18 - 290) / 290] x 100
Subtract the new number by the original number
18 - 290 = -272
-272 ÷ 290 = -0.9379310344827586
-0.9379310344827586 x 100 = -93.79%