New User- Complex Excel for Mac 2008

Sorry, not sure exactly where to post.

Bit of a complex problem, but comes down to needing to divide to elapsed times by each other, then multiplying by 100 to get (time/time)=(percentage)

I know that to do elapsed time to the correct accuracy I need (mm):ss.s but can't work out how to do (mm):ss.s divided by (mm):ss.s.

Note: All round brackets are square brackets

Can anyone help?
ws242

If no one has the answer for you here, I suggest going to the Mac Office forums on the MS server and ask there. The forum is open but you have to register first. Here is the LINK.

Time in Excel is a serial number (days are whole numbers, hours/minutes/seconds are decimals).

See if this helps you to get started:

Calculate minutes

To get seconds, just multiply that by 60.