Le Matou matheux: percentages

Percentage increase

Collège Martin Luther King in Liffré September 2001: 633 students with 146 in the 7^th ground September 2002: 645 students with 165 in the 7^th ground September 2003: 635 students with 151 in the 7^th ground	What is the percentage of students increase between 2001 and 2002? round to the nearest hundredth
	What is the percentage of students decrease between 2002 and 2003? round to the nearest hundredth
	What is the percentage increase of students in the 7^th ground between 2001 and 2002? round to the nearest hundredth
What is the percentage decrease of students in the 7^th ground between 2002 and 2003 ? round to the nearest hundredth	If we foresee a 2% increase in September 2004, how many students will there be in this school?