The National Association of Realtors said Tuesday that pending home sales in the United States fell to the lowest level on record in November. The trade group said its seasonally adjusted index of pending sales for existing homes fell 4 percent to 82.3 from a downwardly revised October reading of 85.7 in October. The reading was worse than the 88 figure predicated by economists surveyed by Thomson Reuters. The reading, which was down 5.3 percent from November 2007, was the lowest since in the eight-year history of the index, beating the previous record low of 83 set in March 2008.