-11.5% is the change from 287 to 254
Calculation steps:
[( 254 - 287 ) ÷ 287] x 100 = -11.5%
Formula
Percentage change = [(254 - 287) / 287] x 100
Subtract the new number by the original number
254 - 287 = -33
-33 ÷ 287 = -0.11498257839721254
-0.11498257839721254 x 100 = -11.5%