Wall Street’s main indexes slid on Wednesday, with the Dow plunging more than 600 points, as worries of a less dovish Federal Reserve lifted Treasury yields, pressuring megacap stocks and amplifying losses in McDonald’s and Coca-Cola shares.In afternoon trading The Dow Jones Industrial Average tumbled 566 points, or 1.3%, to 42,358. The S&P 500 lost 1.5%, and the Nasdaq dropped more than 2%.The benchmark index is set to log its third consecutive day of decline, if losses hold. 3 The Dow and and S&P 500 we ...