What do you call this kind of value presentation? And how to do it?
The one on the top left corner (Product line QTD Overview):
(http://4.bp.blogspot.com/-Bp0wgyygryc/U2_JT2GU47I/AAAAAAAABoQ/Lu2hjzhqHDM/s1600/image024.jpg)
I'd like to use this to present customer movement (signup/ signout - if there's decrease or increase in number of members)
TIA!