An aptitude exam is held every year and a lot of applicants apply for it. But only few appear for the exam, and very few are able to clear the exam. In 2017, only 45% of the applicants appeared for the exam, out of which only 40% cleared the exam. In 2018, only 60% of the applicants appeared for the exam, out of which only 35% cleared the exam. If the number of applications increased by 20% from 2017 to 2018, what is the percentage increase in the number of applicants that cleared the exam?