Whereas business investment in NSW and Victoria is growing (albeit modestly), in WA it is, of course, contracting very sharply (as it is in Queensland). I think most people have understood for some time that this was on the cards.
Consumer spending and employment growth in WA, which had outpaced the national average by a wide margin, have come back to be a bit below the national average. The rate of WA's population growth has slowed. Housing prices have declined a little, while those in Sydney and Melbourne have, at least until recently, risen at quite a clip.