If you are talking about NSW, the 2015 Strata Schemes Management, Regulations and Development acts – which in combination created the mechanisms by which a super-majority in a scheme could vote to dissolve or radically alter the strata plan – became law in 2016.
These are all accessible online through government portals.
Despite the processes being in place, the opportunities for dissent and effective veto are so extensive that very few strata schemes have gone down this road, instead allowing market forces and generous financial compensation to get the backsliders over the line. However, the threat of employing the collective sales laws is hovering in the background if a small minority tries to hold out for selfish gain.