Percentassery

(n.) A quantitative word describing the single percentage of "assed" force you are emitting when fulfilling a given task. Akin to "half-assed", but much lower in output. ¹

(adj.) Can be used to describe one's low level of desire to complete a task.²

1. She showed her percentassery as she kicked a muffin towards the trash bin in minimal effort to clean.

2. His actions were very percentassery; I could tell that he did not want to be here working today.