The following assumes that you have downloaded Rsync Wrapper from this location, and it is in your search path. Credits to StefanK at MacScripter.
The script will provide a running progress meter with percentage in a window, as rync runs. When rsync has finished, a pop-up display of the copy statistics will be presented. I used the same AppleScript as StefanK posted in the above link. Rsync Wrapper works fine when tested on El Capitan 10.11.3. Hope it helps you.
After I unzipped Rsync Wrapper in my Downloads folder, I soft-linked it into my ~/bin directory by the same name. ~/bin is in my search path, and I could just use it in the AppleScript without path issues.
The underlying ideas for the AppleScript/Objective-C Rsync Wrapper came from this post.
Here is the AppleScript that I used to copy the contents of my Picture folder to another empty folder named POut.
set theSource to POSIX path of ((path to home folder) as text) & "Pictures:"
set theDest to POSIX path of ((path to home folder) as text) & "POut:"
tell application "Rsync Wrapper"
activate
set {exit code:exitCode, error message:errorMessage, items transferred:filesCopied, statistics:stats} to rsync from source theSource to destination theDest arguments {"-au", "--exclude=.DS_Store"}
end tell
if exitCode is not 0 then
display dialogerrorMessage
else
display dialogstats
end if
return