Wal-Mart's second quarter 2015 earnings decline by 15% over the prior year. Wage increases with minimum wage raised to $10 by Feb 2016. Wal-Mart is making investments in more employees per store, adding people at checkout lines to improve service, improving the look and feel of stores to get shoppers back and reverse earlier declines in per store sales. Per store sales increasd by 1.5% for the second quarter 2015, the fourth quarter of increases before a period of falling per store sales. Competing for sales are Amazon and dollar stores. Wal-Mart is also investing in online sales with the lower margins in this field. Wal-Mart's profit for the second quarter was $3.48 billion compared to $4.08 billion the prior year. Total revenue of $120.8 billion was close to what it was in 2014. Wal-Mart's strategies include asking suppliers to offer more price cuts and to put less into marketing, asking suppliers to pay additional fees for warehousing, and stocking from the shop floor for retail shelves instead of going to the backroom storage. Forecasts for online sales are lowered to reflect weaker international sales in UK, Brazil, with overall online sales growth now at high teens instead of the 20% range. The Chinese e-commerce site Yihaodian was acquired for $760 million for full ownership....