Problem in report

[ashishkukreja]

Months Sale

April 45
April 56
April 35
April 52
April 45
May 75
May 100
May 62
May 85
June 23
June 42
June 52
June 45

I want to create a report

example

Month Sum of Sale Growth Percentage

April Total sale in April 0
May Total sale in May
June Total sale in June

In growth Percentage a formula where Total sale of May / Total Sale of April * 100
ans similarly
Total Sale of June / Total sale of May * 100