-8.33% is the change from 336 to 308
Calculation steps:
[( 308 - 336 ) ÷ 336] x 100 = -8.33%
Formula
Percentage change = [(308 - 336) / 336] x 100
Subtract the new number by the original number
308 - 336 = -28
-28 ÷ 336 = -0.08333333333333333
-0.08333333333333333 x 100 = -8.33%