Kevin Johnson, who succeeded Howard Schultz as CEO this month, on Thursday presided over an earnings call where the company cut its full-year profit target on the heels of disappointing second-quarter sales and stalling growth from its main business in the United States. Shares in the company fell 4.9 percent to $58.30 after Starbucks also announced that it was reviewing its Teavana business after that chain's mall stores dragged down overall sales.