-27.6% is the change from 308 to 223
Calculation steps:
[( 223 - 308 ) ÷ 308] x 100 = -27.6%
Formula
Percentage change = [(223 - 308) / 308] x 100
Subtract the new number by the original number
223 - 308 = -85
-85 ÷ 308 = -0.275974025974026
-0.275974025974026 x 100 = -27.6%