You can use tool available at Analytics-Toolkit.com, in order to check current update or changes in algorithms by just a simple click.

Use google analytics tool to check that.

The best way to learn whether the recent Google update or algorithm update has affected your website or not, just go through the details of that update and learn what all consequences other websites are facing. I can suggest a good platform to follow any new update; it is blog section of Techmagnate. They keep on updating all the latest updates coming in Google, Bing, Facebook etc. They also mention how to identify and recover from those updates. For example, recently I found two Google update (FRED and Possum) details on their blog. You can also follow the same.