Percent Change

A group of wildlife conservationists are trying to determine what is causing a recent decrease in the number of white-tail deer in a particular area. Two years ago, they estimated the population to be 680. Recently, the population was estimated to be 410. Which is closest to the percent of change in the white-tail deer population?

• 40%

• 66%

• 270%

• 54%

Bald eagles have made an amazing recovery from the brink of extinction. In the mid-1960s, there were only 450 breeding pairs in the lower 48 states. Since that time, the bald ealges have made a comeback due to habitat restoration. There are now about 10,000 breeding pairs in the lower 48 states. By about what percent has the number of bald eagle breeding pairs increased?

• 54%

• 95%

• 10%

• 2,122%

Bees are responsible for the pollinaton that leads to the production of 1/3 of all our food. Sadly, the number of hives has declined drastically in recent years. In Central Texas, the number of hives has dropped from 276 to 125 in the last ten years. Which is closest to the percent decrease in the number of bee hives in central Texas?

• 55%

• 151%

• 120%

• 90%

Marine biologists who have been studying the great white shark population off the coast of California have discovered that the number of great white shark sightings in areas commonly frequented by beach-goers have increased dramatically over the last 10 years. In 2000, there were 17 sightings of great white sharks. In 2010, there were 32 sightings of great white sharks. Which is the best estimate of the percent change in the number of great white shark sightings?

• 15%

• 88%

• 47%

• 24%

Three months ago, Santos could walk 2 miles in 40 minutes. Today he can walk 2 miles in 25 minutes. What is the percent change?

• 37%

• 48%

• 63%

• 62.5%

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter? 

• 35%

• 25%

• 30%

• 20%

Sales of the Xbox One increased from 10,000 to 18,500 in November. What was the percent increase?

• 8.5%

• 45.9%

• 85%

• 85.8%

Find the Percent of Change.  Round to nearest Percent. 
From 45 mph to 24 mph

• 47% Increase

• 88% Increase

• 88%  Decrease

• 47% Decrease

The Game Stop is having a sale on an originally $66.64 game. It is on sale for $29.99. What is the percent change?

• 54.9% Decrease

• 54.9% Increase

• 549% Decrease

• 549% Increase

Mrs. Banks bought a car for $25,000 and sold it 5 years later for $16,000. Find the percent decrease for the price of the car.

• 36%

• 9%

• 34%

• 26%