Google makes almost more than 500 changes per year. Most of the people don’t bother about the minor changes but however, it effect the SERP results. We can know about the effect of a particular update by checking its change on search engine rank.
Mostly, updates come ahead on Thursdays or Fridays. В The only way to remain safe and un-effected from these updates effects on the site give attention on content. Because most of the Google updates are to bring out the best and unique content from Google Search Results.Gary IIIyes told that whether there are big changes or small Google will announce these in the same way.