-44.27% is the change from 515 to 287
Calculation steps:
[( 287 - 515 ) ÷ 515] x 100 = -44.27%
Formula
Percentage change = [(287 - 515) / 515] x 100
Subtract the new number by the original number
287 - 515 = -228
-228 ÷ 515 = -0.44271844660194176
-0.44271844660194176 x 100 = -44.27%