-19.65% is the change from 285 to 229
Calculation steps:
[( 229 - 285 ) ÷ 285] x 100 = -19.65%
Formula
Percentage change = [(229 - 285) / 285] x 100
Subtract the new number by the original number
229 - 285 = -56
-56 ÷ 285 = -0.19649122807017544
-0.19649122807017544 x 100 = -19.65%