There are underlying problems when you use net worth for determining “class” ( quintiles).
The two most obvious being, especially here in Canada is that most of the net worth is tied to the value of the home.
Market value $800,000
Total debt $ 550,000
Net worth: $250,000 oh, look at you. Your middle class
Market correction sees market value of home plummet to 650,000
oh oh sucks to be you.
Most people instead use median income levels. It’s steady, isn’t tied to the value of something. It’s an indicator of earnings that can be directed toward either debt or savings. Which for the middle class is one or the other.
In Canada, if you gross $100,000 you belong to the lofty 10% club. Forget where the line is for the well off/upper middle class or top 20%