So, last year the chess club had 20 members. This year the club has 15 members. Find the percent of change, and state whether the percent of change is an increase or decrease.
20 % ( not sure how to explain this ) because 5 out of 20 is equal to 20 % cause 20 +20 + 20 +20+20 equal 100 so taking 5 people off would equal to 20%
