I need to add the number of each item to the end of the label for each segment

e.g. I have a pie chart consisting of:

3 sheep
2 pigs
1 chicken

I need the pie chart labels to show the numbers, so appear as

sheep (3)
pigs (2)
chicken (1)

rather than just

sheep
pigs
chicken


There must be a way of doing this without having to do it manually?

Thanks!