Upon entering a business school, students are asked regarding their intended concentration. From past records the following proportions were determined, 30% - management, 15% - finance, 20% - accounting, 25% - marketing, and 10% - economics. For the newly admitted class of 350 students, the breakdown of preferences was as follows: 99 - management, 66 - finance, 59 - accounting, 80 - marketing, and 46 - economics. Is there sufficient evidence that the newly admitted class is different from previous classes?