Hello...can anyone explain why there would be almost a $22k difference in the 'federal deductions and exemptions' from 2016-2017 (nothing else has changed)?

I have inventory from a home business, but I took a break in February of last year, only selling $65 for the entire year. I was also out of work for a total of 4 months on FMLA. All of my other numbers appear to be fine.