Mortgage appplications decreased 4.4% to 644.5 in the week ended April 1, according to the Mortgage Bankers Association (MBA). The MBA’s seasonally adjusted index of refinancing applications fell 3.1% to 1798.8.The MBA’s purchase index fell 5.3% to 446.0.

Adjustable-rate mortgages fell to 35.2% from 36.6% in the previous week.

Refinancings accounted for 38.3% of last week’s total applications, up from the prior week’s 37.8%.

Fixed 30-year mortgage rates averaged 5.91% down from 6.08% last week.

Rates on one-year ARMs fell to 4.29% from 4.39%.