Let's say:
- you had 10k visitors per month on average in the year 2014,
- you have only 5k visitors per month on average in the year 2017
i.e. the traffic has suffered a -50%.
What tools does Google Analytics offer to compare 2 years like this?
Example of what I would be looking for:
Easy way to get a table/list of referrals in year 2014 that are no more referrals in 2017, or referrals for which the % of total traffic has dropped between 2014 and 2017
More generally than just
Referral
source of traffic, which other source of traffic has dropped significantly?
About 1., it's the kind of thing I would like to see in Analytics' Analytics Intelligence
tool. Is it available?