Clicking gears on new Electra Townie 8i
It can be many issues, but a click in the hub which is a rotary noise, is usually the Chain guard or the dust cap on the hub behind the cog which has popped out of place, or possibly cracked. 

The noise is not detrimental to the safety of the bike, but you should find a shop that has experience repairing these hubs, and get them to do a rebuild.