Quick sanity check on my tax math?

I did the calculator, and it says I would lose 321 for the year from what the old plan was. But I actually paid more than either number last year, so I guess I have a more complex tax setup than what the calculator does.

I guess I will have to wait and see how it impacts me.

I would have to get more in in my check as the tax rates are dropping, but how that plays out at tax time, hard to tell.