I quit a master’s program for a PhD program. How do I list this on my CV?
I would suggest something like &quot;left to pursue PhD&quot; rather than &quot;quit&quot; or &quot;abandoned&quot;. The explicit meaning is the same, but there is an implicit negativity in quitting or abandoning something.

PhD student, Dept of Rocket Science, University A, 2016 to present (expected Spring 2032)
MA student, University B, 2015-2016 (left to pursue PhD)
B.Sc. Physics, University B, 2015

(I'd also probably add the program name/degree titles and anticipated graduation date)
In your case, it's a short enough window that you could also probably leave it off without any notice, especially if you are applying to industry positions.
One time to definitely not leave it off is anything asking for your full academic record - the cases where this typically applies are in graduate admissions (which likely longer apply to you) and some grant applications (which still could).