Allocate NY income by percentage still results in 100% for NY

In my W2 I have state income in CA and the state income for NY is actually the total (box 1).

I'm filing on turbotax and allocating income to NY.

I go to allocate by %, aiming to put 28% for NY since the income for CA is 72% of the total income for the year.

However, after I write 28, turbotax still sets NY state income to the total for the year.

What's going on?

THANKS