Reformatting data labels for Excel pie charts

Hi, I was wondering if there is any way that I can present data labels for a series within a pie chart in the following format:

[Category Name] ([Value]) [Percentage]

So an example would be:

New Business (120) 64%

I have looked within the options and it only seems to give you the option to separate by comma or space etc, I can't seem to find a way to put brackets just around the value part. Is there a way around this? Also, is there any way to put a formula within a chart title?

Thanks,

Ben