-7.74% is the change from 336 to 310
Calculation steps:
[( 310 - 336 ) ÷ 336] x 100 = -7.74%
Formula
Percentage change = [(310 - 336) / 336] x 100
Subtract the new number by the original number
310 - 336 = -26
-26 ÷ 336 = -0.07738095238095238
-0.07738095238095238 x 100 = -7.74%