Complex sentence: In March 2012, an ABC News series included claims that approximately 70 percent of ground beef sold in U.S. supermarkets contained the additive at that time, and some companies and organizations stopped offering ground beef with the product.
Split into simpler sentences: In March 2012, an ABC News series included claims that approximately 70 percent of ground beef sold in U.S. supermarkets contained the additive at that time. As a result, some companies and organizations stopped offering ground beef with the product.