PepsiCo (PEP) "has to win their customers back," says Andy Swan. Likefolio's data shows overall interest in the snacks and beverage conglomerate has fallen 24% year-over-year, compared to Coca-Cola (KO) only losing 4%. Consumers becoming more health-conscious is the likely culprit behind the company's down action. Until there's a shift in consumers, Andy says he's staying away from PepsiCo's stock.