110 charging hours/10 bars

I only charge 110v.When I first got the leaf a full charge would read up to 120 miles on the gom and with low batterie it would state 20 hours to charge.
Now with 2 bars missing a big gom number is about 72 and at low batterie about 12 hour charge.does this sound correct?

Normal

With two capacity bars missing OP has lost at least around 20%.
But bars are slow to drop and capacity loss could be near 28%.

But the stored energy value at which Low Battery Warning occurs does not change.
So as you lose more and more capacity a larger % of the energy storage capability is below LBW.
That is why your 12 hours versus 20 hours is about right.
It does not mean you have lost 40% battery capacity.

It just seems that way because a larger % is hiding below LBW.