Showing % change next to average in task bar

Hello friends,

You know when you highlight to cells for example in excel, average, sum and count are shown below in task bar. I need to add few things here as well like %change for fast calculation.

how can I do that please? thanks

I attached a screen shot to show what I mean. I need to add more stuff in the same bar in the buttom of the page like %growth % change. thanks