S&P 500 Index dropped 0.87% or 10.74 points reaching 1,225.73 on Tuesday after Fed decided to leave its key interest rate unchanged and retail sales rose at slower pace than predicted. 9 out of 10 S&P 500 industries experienced a decline led by economic growth dependent companies. Sears Holdings Corp., Alcoa Inc. and Bank of America Corp. each tumbled about 2.3% while leading consumer electronics retailer Best Buy Co. plunged 15% as discounts harmed firm's gross margin. Amazon.com Inc. lost 4.8% after worsened sales estimates.