-20.36% is the change from 280 to 223
Calculation steps:
[( 223 - 280 ) ÷ 280] x 100 = -20.36%
Formula
Percentage change = [(223 - 280) / 280] x 100
Subtract the new number by the original number
223 - 280 = -57
-57 ÷ 280 = -0.20357142857142857
-0.20357142857142857 x 100 = -20.36%