Go to Options/Online services and look for the "Factor" column. The "1" there equals to 100%. If you want to change profit value by +5% edit it to 1.05, if you want -5% change value to 0.95
Happy mining.

Thanks, just what I was looking for, not sure how I missed that

Edit: OK so I fixed all the online services, is there anywhere I can edit the litecoinpool one so it has 1.02, tried the 'user defined online services' but that only allows me to select from the existing ones, not add a brand new one.