@cduv Tested on 2.5.2 and it still works, though I found 90% to be more aesthetically pleasing.
Thank you for this, by the way, The limited screen usage for anything but the dashboard was slowly driving me nuts.
Using percentages for widths should be the default anyway, given the wide range of display resolutions available today. It also allows for a more flexible interface, though admittedly it can cause some headaches to get it right.