I want to better understand this topic in case of a test

A store is having a clearance sale on winter gear due to global warming, with everything marked down 35%. The boots you have been wanting to buy are now $45. Fill in the table to find their original price and the mark-down in dollars. Mark-down (part) New Price (part) Original Price (whole) $45 $35 $100 Mark-down (part) New Price (part) Original Price (whole) $45 $ $35 $ 65 $100 (Round to two decimal places as needed.)