Format "%.2f" is not optimal for large or small values.
Format "%g" should be prefered.

Change-Id: I92899d80564b9000b1f3e049221c456f8e1176a9
Reviewed-on: https://gerrit.libreoffice.org/31445Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>