I also searched for how to show the total progress with rsync and I've found a useful answser from this post: http://stackoverflow.com/questions/7157973/monitoring-rsync-progresshttps://stackoverflow.com/questions/7157973/monitoring-rsync-progress
Basicly, you can use --info=progress2 in the dev version of rsync 3.1.0. Here is what the doc has said:
There is also a --info=progress2 option that outputs statistics based on the whole transfer, rather than individual files. Use this flag without outputting a filename (e.g. avoid -v or specify --info=name0 if you want to see how the transfer is doing without scrolling the screen with a lot of names. (You don't need to specify the --progress option in order to use --info=progress2.)