This is really bad

An example for NYC

A year ago flight to western Europe in Z was 200 base points plus 50% for PL you get 300 points.

NYC C class reward was 3000 so we get 3000/300= 10 flights

Now a flight to western Europe in Z is 150 base plus 70% for PL and Premium and thus you get 255 points.

NYC C class reward will be 4000 so we get 4000/255=15.69!!! flights

Did I miscalculate?