I have a some-what simple app for importing data from excel to our database.
The app is written in C# and uses ado.net.

When I open the xls file, it displays in a grid to show the values.

The problem is values are formatted differently depending on the machine.

I have 2 machines. One the first one (excel installed) I open the xls file
and all values display as decimal even though in excel there displayed as
percents. This is fine and how I want it.
On the second machine (excel not installed) the values display as percents.

What can cause the difference in formatting?

Thanks,
Joe