-1.03% is the change from 290 to 287
Calculation steps:
[( 287 - 290 ) ÷ 290] x 100 = -1.03%
Formula
Percentage change = [(287 - 290) / 290] x 100
Subtract the new number by the original number
287 - 290 = -3
-3 ÷ 290 = -0.010344827586206896
-0.010344827586206896 x 100 = -1.03%