-27.16% is the change from 313 to 228
Calculation steps:
[( 228 - 313 ) ÷ 313] x 100 = -27.16%
Formula
Percentage change = [(228 - 313) / 313] x 100
Subtract the new number by the original number
228 - 313 = -85
-85 ÷ 313 = -0.2715654952076677
-0.2715654952076677 x 100 = -27.16%