-23.51% is the change from 285 to 218
Calculation steps:
[( 218 - 285 ) ÷ 285] x 100 = -23.51%
Formula
Percentage change = [(218 - 285) / 285] x 100
Subtract the new number by the original number
218 - 285 = -67
-67 ÷ 285 = -0.23508771929824562
-0.23508771929824562 x 100 = -23.51%