-18.93% is the change from 280 to 227
Calculation steps:
[( 227 - 280 ) ÷ 280] x 100 = -18.93%
Formula
Percentage change = [(227 - 280) / 280] x 100
Subtract the new number by the original number
227 - 280 = -53
-53 ÷ 280 = -0.18928571428571428
-0.18928571428571428 x 100 = -18.93%