I want to create a report on opportunity object to get conversion rate. Like if I have 100 opportunities are in 1 stage and 10 of them will travel all the stage and end with close-won So first stage probability would be 10% then let say 50 opportunities are in 2 stage and only 10 will move to close won stage so 2 stage probability would be 20%. Same I want to for each stage. I have previous year opportunity history report. How can I get conversion rate for each and every stage in Salesforce.