Is there a way to generate charts and pull bug data/percentages to build statuses?
Topic on Talk:Phabricator/Help
https://phabricator.wikimedia.org/maniphest/report/ does not support charts and is limited (plus does not even load on Wikimedia's Phabricator instance). Some Wikimedia Foundation teams use http://phlogiston.wmflabs.org/ - see Phlogiston for more information but that is very likely not what you want either. You may want to elaborate which underlying problem you would like to solve by generating charts... :)