Delphi 2007 precision

I have an application previously written in Delphi 7 but recently compiled to Delphi 2007. Everything was fine until we found out that the figures on the reports generated on Delphi 2007 was quite far from the result produced by Delphi 7. Nothing on the code was changed except it was recompiled on the higher version. Variable types declared as double. The formulas used are quite complex so I couldn't post here. Has anyone experienced the same? Is there a way to maintain the same precision Delphi 7 uses? Thanks.