Show numeric formula total as percent

I am having trouble showing a formula sum as ‘percent’.  The following formula returns the value as 73, which is correct. However, I need it to display as 73%.

Round(

       (

        ([Overall Satisfaction])*0.15+([Trust])*0.2+([Feeling Valued])*0.2+([Communication Quality])*0.1+([Personalization])*0.1+([Impact Perception])*0.15+([NPS Score])*0.1)*10

       )

If I change the field attribute ‘Display as’ to Percent, then it shows as 7300%. If I add to the formula to divide it by 100 at the end, then it shows the result as 100%.

Round(

       ((

        ([Overall Satisfaction])*0.15+([Trust])*0.2+([Feeling Valued])*0.2+([Communication Quality])*0.1+([Personalization])*0.1+([Impact Perception])*0.15+([NPS Score])*0.1)*10)/100

       )

Where am I going wrong with my syntax on getting this to work? I have tried as both Numeric-Formula and Numeric-Percent field types.