It's easily done: on the Dashboard, click on Reports, then Sales Summary (it's the top item, so it probably comes up first), then set the date range to Last Year, and you'll get all of that.
I should have mentioned that this only works on the computer version of the Dashboard, not the mobile version. If you follow my previous post, you will get something that looks like this:
Click on Last Year - the last box in the list. Hope this works.
