people left handed = 8
people right handed = 22
total people = 30
percentage left handed = 8 / 30 = 4 / 15 = 0.267 = 26.7%
percentage right handed = 22 / 30 = 11 / 15 = 0.733 = 73.3%
difference = 73.3% - 26.7% = 46.6%
Answers:
percentage left handed = 26.7%
percentage right handed = 73.3%
difference between them = 46.6%