An 89.9% is a B+.
A 90% is an A-.
So your grade is an 89.9999%?
Again, some charts and graphs would really help.
They wouldn’t help, though. My grade really was just a B+, but I felt like sticking an extra + on the end to help convey how high on the B it was. It was a purely nontechnical gesture.
I won’t use the double + anymore; after reconsidering, it doesn’t make that much sense to do.