-27.87% is the change from 287 to 207
Calculation steps:
[( 207 - 287 ) ÷ 287] x 100 = -27.87%
Formula
Percentage change = [(207 - 287) / 287] x 100
Subtract the new number by the original number
207 - 287 = -80
-80 ÷ 287 = -0.2787456445993031
-0.2787456445993031 x 100 = -27.87%