Oh dear Rated De, for someone who claims to analyse company performance you missed a pretty key point in the story you linked to.
However, the figures only captured passengers flying between Perth and London, and did not take into account passengers using the route to fly between London and Melbourne, or connecting in Sydney and other locations.
So the flights are 75.5% full of passengers travelling to Perth and then there are all the other passengers travelling on to onward destinations. The true load factor is not disclosed but must be anywhere from 75.5-100%.
I actually think the fact they are filling three quarters of the flights solely with passengers to/from Perth shows it must be performing quite well. That leaves only 60ish seats that they need to sell to ADL, CBR, MEL, ASP, PHE, BNE, KGI, BME, DRW, SYD to fill the flight.
As has been discussed at length on this forum, this won’t be most people’s preferred route from the east coast to LHR, but with Perth pax already filling most of the plane they need only sell a small number of seats to LHR out of Australia's secondary cities to make the service a commercial success.