Percent of Change
500 albums to 100 albums
80% Decrease
Joe estimated that there were 100 people in the room. There is actually 140 people in the room. Round to the nearest whole percent.
29%
75% of 80 is what number?
60
A ratio that compares the amount of change to the original amount.
80.5 is what percent of 80.5?
100%
450 pieces to 445.5 pieces
1% decrease
Carissa estimated that 150 people would respond to her wedding invitations. 120 people actually did. What is the percent error? Round to the nearest whole percent.
25%
Find 60% of 45.
27
When the original amount is increased, it is called a?
Percent of Increase
Last year the backgammon club had 30 members. This year the club has 24 members. Find the percent of decrease in the number of members.
20%
24 hours to 86 hours
258% Increase
Whitney estimated that there were 36 red m & m's in the bag. There was actually 28. What is the percent error? Round to the nearest whole percent.
29%
35% of what number is 12? Round to the nearest tenth if necessary.
34.3
What is the percent equation?
Part = % X Whole
What number is 55.5% of 70? Round to the nearest tenth if necessary.
38.9
Last year 762 students voted in the student council election at San Bruno Middle School. This year 721 students voted. What was the percent of change in the number of students that voted to the nearest whole percent?
5% decrease
Rachel estimated that there were 18 marbles in the jar. There was actually 24. What is the percent error?
25%
90 is what percent of 95? Round to the nearest whole percent if necessary.
95%
What does n represent in the percent equation?
percent
In 2000, Florida's population was 15.9 million. In 2008, the population was estimated to be 18.8 million. Find the percent of increase to the nearest whole percent.
18%
When Ricardo was 9 years old, he was 56 inches tall. Ricardo is now 12 years old and he is 62 inches tall. Find the percent of increase in Ricardo's height to the nearest whole percent.
11% increase
Tod's class has 50 students. He guessed that 12 had blue eyes. Only 6 actually had blue eyes.
100%
In the city of Springfield, 75% of the parks have tennis courts. If 15 parks have tennis courts, how many parks does Springfield have altogether?
20 parks
An additional amount of money charged on items that people buy.
Sales Tax
The Briarwood Middle School chess club has 55 members. 22 of the members are in seventh grade. What percent of the members of the chess club are in seventh grade?
40%