Fixed percentage added to exchange rate

Hi,
I want to add a fixed percentage of 2% on top of all currency exchange rates.

I’m aware I can add a fixed amount in the Exhange Fee field, but that doesn’t seem me to keep a fixed percentage of 2% in case the rate is updated.

E.g. For DKK currenty the rate is 7.448. To add 2% I can add 0,14896 to Exhange Fee field. However, if the rate is then updated to 7.523 2% would be 0,15046 meaning I would have to update the Exhange Fee amount everytime all the rates are automatically updated.

Other currency converters like WPML’s have an option to add a fixed percentage to the rate, so if this is currency not possible in your Multi Currency converter I suggest you add it as an enhancement (think I saw another post here suggesting the same a couple of years ago).