You should be able to use the Calculated Metrics functionality to get this. You can build a metric which is equal to Visits [w/ your Mobile Visits segment applied] divided by Visits. You can then format that as a % and use in any other reports/dashboards you have.

Many of our users in our organisation use the Adobe Analytics suite on Macs and whenever they need to update Ad Hoc they are prevented from installing it due to corporate security policies, they end up having to get their security policies temporarily changed to allow the install. Our policies aren'...