Convert Decimal Hours into Minutes

I have a spreadsheet that tracks working hours by decimal hours. For example, 8hours15 minutes shows as 8.25 hours. This is tracked through a Calendar year. I then have a cell that calculates how much overtime is accrude or how much time needs to be made up. This also show decimal hours in both positive and negative answers depending on the range of hours worked. How do I convert the decimal hours into minutes to show minutes over or minutes under? I tried the below formula and anytime my answer is negative, it says #VALUE in the cell. My formula looks like this: =TEXT((SUM(E10))/1440, "mm:ss").
E10 is the cell that contains the total decimal hours. Formula there looks like this: =SUM(C5:C214).