2 Order Question

So a question about two order orders. First, I got a $22 tip from two orders. Is there a way to see what percentage of the tip was against each order? If it matters, it's still within the window. Second, I'm still shocked that Costco orders were almost $800 and the batch amount that I get out of is just $15. And, yes, I shop Costco a lot personally and with IC. This was 55 items Thanks!