United Airlines posts $1.9 billion loss in pandemic-laden 4Q" while "revenue plunged 69% in the fourth quarter compared with a year earlier," reported ABC news. Analysts predicted United would lose $6.62 per share but it lost $7 per share during the pandemic. Despite these statistics, United is optimistic about the future as it is cutting $2 billion in structural operating costs and is confident business travel will increase along with leisure travel resulting in higher profit margins in 2023. If United Airlines Holdings Incorporated had fourth-quarter net income of negative $917 million with net sales of $3.412 billion. What was its fourth-quarter profit margin? Note: Negative answer should be entered with a minus sign. Round your answer to the nearest tenth. Profit margin %