By Sam Mamudi
NEW YORK (MarketWatch) -- The dollar declined further against the yen Tuesday morning after data showed a more than 27% fall in existing U.S. home sales. The dollar fell against the Japanese currency to a low of 83.57, a loss of more than 1%. Also following the data, the euro pared losses against the dollar, to $1.2665 versus $1.2684 late in the prior session. The dollar index , a measure of the U.S. unit against a basket of currencies, traded at 83.14.