-21.72% is the change from 290 to 227
Calculation steps:
[( 227 - 290 ) ÷ 290] x 100 = -21.72%
Formula
Percentage change = [(227 - 290) / 290] x 100
Subtract the new number by the original number
227 - 290 = -63
-63 ÷ 290 = -0.21724137931034482
-0.21724137931034482 x 100 = -21.72%