Sally’s year average was an 55before she took a test. After the test, her average was a 40. Find the percent of decrease.

55 people said the vanilla ice cream was their favorite. A few days later chocolate ice cream was out. On only 15 people like vanilla ice cream. Find the percent of decrease.

Last year there were 15 moons in the sky. A year has passed and now there are 20 moons. Find the percent of increase.

Sally read 25 books on Monday. On Tuesday she read 32. Find the percent of increase.

I saw these shoes and they were $25 last week. This week they are $21. Find the percent of decrease.

Bob wants to see a movie. It cost $300. Next week he saw another movie for $250. Find the percent of decrease.

My water bill cost me $50 last month. This month it cost me $80. Find the percent of increase.

A shirt cost $40 is reduced to $32. Find the percent of increase.

McDonalds last year had 50 co workers. Now McDonalds has 40. Find the percent of decrease.

In storage I have 90 backpacks. Backpack season just came and now I have 50. Find the percent of decrease.

There are 30 students in my math class. A week later there were 50 kids in my math class. Find the percent of increase.

Joe read 34 books last summer, this summer he read 24. Find the percent of decrease.

In 1747 there were 34 stars on the flag, now there are 50. Find the percent of increase.

There are 10 pair of shoes. We went to the store and we bought 20 more pairs. Find the percent of increase.