-20.35% is the change from 285 to 227
Calculation steps:
[( 227 - 285 ) ÷ 285] x 100 = -20.35%
Formula
Percentage change = [(227 - 285) / 285] x 100
Subtract the new number by the original number
227 - 285 = -58
-58 ÷ 285 = -0.20350877192982456
-0.20350877192982456 x 100 = -20.35%