-1.05% is the change from 287 to 284
Calculation steps:
[( 284 - 287 ) ÷ 287] x 100 = -1.05%
Formula
Percentage change = [(284 - 287) / 287] x 100
Subtract the new number by the original number
284 - 287 = -3
-3 ÷ 287 = -0.010452961672473868
-0.010452961672473868 x 100 = -1.05%