2007 Census data—the latest reliable source—reports that Oromia’s total population was approximately 27 million, of which 1,943,578 individuals identified as Amhara, representing about 7 percent of the region’s population.
A more detailed breakdown from an unofficial forum compiles estimates by zone, aggregating to roughly 1.8 million Amharas in Oromia in 2007.
No official, up-to-date figure beyond 2007 is available.
If allied forces( Tigray, Amhara, Oromia & others) come closer to Addis Ababa, the latent force could be activated to arrest all corrupted officials of Oromia PP.