Difference between Absolute and Relative in scales

Hi Experts,

I am creating scales to calculate price in charge calculation for shippers and LSPs.

Here I have a doubt on calculation type (Absolute, Relative) and the impact of these 2 types.

So anyone who already gone through same way can tell about the impact of these 2 calculation types ( Absolute, Relative).

Points will be given for replies.

Thanks,

Shakti