1. go to a switch detail view
2. click on Interfaces tab
3. click on an interface (preferably the problematic one)
4. no the left-pane, under Interface Details tab, click on the link for Utilization
5. it will show you a quick info on in/out % as max, min, avg, and 95th Percentile along with its recorded reading time

In the new UI:

1. go to a switch detail view
2. click on Interfaces tab
3. click on an interface (preferably the problematic one)
4. ... can't seems to find a similar reading from the old UI
5. lots of pretty graphs, but it's a bit hard to read

Any advice on this?

or maybe I'm just missing a few clicks?