One possible version:
Recently the Students’ Union has made a survey about what is happiness among 100 students of our school.32 percent of the surveyed students think that wealth is happiness because they think they can buy anything they want if they have much wealth.On the other hand,45 percent of them hold the view that they should be in good health so that they can enjoy whatever they like.However,the rest 23 percent students believe that knowledge will bring him a bright future,and he feels happy.From the survey I know that different people value happiness in different ways and as for me,my happiness exists in my study.