-22.3% is the change from 287 to 223
Calculation steps:
[( 223 - 287 ) ÷ 287] x 100 = -22.3%
Formula
Percentage change = [(223 - 287) / 287] x 100
Subtract the new number by the original number
223 - 287 = -64
-64 ÷ 287 = -0.2229965156794425
-0.2229965156794425 x 100 = -22.3%