According to USA Today, plummeting yogurt sales continued to spoil the performance of General Mills, which is also reeling from declining interest in cereal and snacks.

General Mills saw a decline in the double digits for U.S. sales of yogurt, including decreases for the Yoplait Light brand.

Many customers are giving up regular yogurt in favor of Greek yogurt flavors.  But General Mills efforts to make the transition are proving uneven.  The company said its Yoplait Greek brand had posted sales declines.