Hi Aditya Janapala,
Analytics (mathematical ways of synthesizing metrics) must illuminate business conditions, sentiment and directional changes over time. Insights are what humans make from analytics - once you have data and perform the analysis, you have the knowledge to form insights and change your actions or responses.
(Copied from Quora )
So first analyse your data by understanding it , playing with it .You will automatically understand whats wrong with the trend or the thing that you are trying to figure out .
Then you will explain others about it - so this part i.e. explaining your side that you get from data is insight .
If someone is really good with numbers or number crunching ,he/she doesn't need charts to figure out the trend and many needs charts .
In short there is no such hard n fast rule or procedure or template for this .