Aug 24 (Reuters) - The dollar extended declines versus the Japanese yen on Tuesday after a report showed sales of previously owned U.S. homes dropped more steeply than expected in July.

For details of the data see [ID:nN24196313].

The dollar also lost ground against the euro, with the euro zone single currency erasing earlier losses versus the greenback after the report.

The dollar was last down 1.6 percent at 83.79 yen from 83.89 before the data. The euro was last up 0.2 percent at $1.2674 compared with $1.2636.

Investors also bought Swiss francs after the report and the euro slid to session lows at EURCHF= 1.3082 francs (Reporting by Vivianne Rodrigues; Editing by James Dalgleish)