I got a huge tax return but would like to spread that out in my paycheck throughout the year. How should I adjust allowances on my W-4 form?

I only have access to my 2016 1040-A tax return form. I was told to divide the amount I paid in taxes by 26 (the number of times I get paid yearly) and then to tell HR that I want that amount taken out of my check each time so they could help me figure out which allowances to select.

1.) I'm not sure how to find that figure on my 1040-A form.

2.) Is this the right method?