Macquarie University (MQ) world rankings includes it being number 240 on the QS rankings, number 251+ on Times (THE), number 151+ on ARWU, and  number 267 with US News. This contributes to Macquarie being the number 8 ranked Australian university overall in the world ranking systems. Macquarie University rankings within Australia include being placed at number 8 on the ERA scale (2012) and being a 4 1/2 Star AEN rated university. Macquarie also has a student survey satisfaction rating of 77.4% for business, 90.3% for health, 91.4% for arts, and 93.8% for science. Macquarie is ranked in the top 40 universities in the Asia-Pacific region and within Australias top 12 universities according to the Academic Ranking of World Universities, the U.S. News & World Report Rankings and the QS World University Rankings. Macquarie was the highest ranked university in Australia under the age of 50 and was ranked 18th in the world (prior to its golden jubilee in 2014), according to the QS World University Rankings.
Question: Which of the four categories of  MQ University student satisfaction surveys has the highest percentage?
Answer: science