Percentage Change and Growth Problems

This video tutorial explains how to calculate percentage change using a simple formula: percentage change equals the change divided by the original value, multiplied by 100. It provides three examples: a car's price decrease, a plant's height increase, and a cat's weight gain. Each example demonstrates how to identify the change and original values, apply the formula, and interpret the results. The video concludes with a reminder that a percentage over 100 indicates more than doubling and encourages viewers to like and subscribe.

What is the formula for calculating percentage change?

• Change divided by original times 100

• Change plus original times 100

• Original divided by change times 100

• Original minus change times 100

If a car's price drops from £32,000 to £28,000, what is the percentage decrease?

• 12.5%

• 8%

• 15%

• 10%

In the car price example, what was the original price?

• £36,000

• £28,000

• £30,000

• £32,000

How much did the plant grow in meters?

• 1.0 meters

• 0.4 meters

• 0.6 meters

• 0.8 meters

What was the original height of the plant before it grew?

• 1.2 meters

• 1.8 meters

• 1.0 meters

• 1.5 meters

What percentage did the plant grow by?

• 50%

• 100%

• 25%

• 75%

What was the weight gain of the cat in kilos?

• 1.3 kilos

• 0.9 kilos

• 1.5 kilos

• 1.1 kilos

What was the original weight of the cat?

• 0.7 kilos

• 0.5 kilos

• 1.2 kilos

• 1.0 kilos

What is the percentage increase in the cat's weight?

• 160%

• 150%

• 165%

• 157%

What does a percentage increase greater than 100% indicate?

• The value has halved

• The value has remained the same

• The value has doubled

• The value has tripled