He's off by magnitudes.

https://berniesanders.com/issues/tax-extreme-wealth/

Over the last 30 years, the top 1 percent has seen a $21 trillion increase in its wealth, while the bottom half of American society has actually lost $900 billion in wealth. In other words, there has been a massive transfer of wealth from those who have too little to those who have too much. For the sake of our democracy and working families all over America who are struggling economically, that has got to change.

https://www.peoplespolicyproject.org/2019/06/14/top-1-up-21-trillion-bottom-50-down-900-billion/


And his plan and rhetoric still frames this as "middle class" when there's a millionaire and above class, and everyone else.