Can I claim education tax credit if tuition was paid with loans and grants, and I have been in college more than four years?

Background:

I changed majors after 2.5 years to a completely different major that has taken another four years to complete, I graduated in 2016.
I did not receive a 1098-T.
I am not sure if I've claimed any education credits. On line 31 of my 2015 form 8863 says 463 but I am not sure what that is supposed to mean.