Percent Change and Decrease Concepts

The video tutorial by Mr. J covers the concept of percent change, explaining how to calculate it through a series of examples and word problems. The tutorial begins with an introduction to percent change, followed by four basic examples demonstrating both percent increase and decrease calculations. The video then transitions to solving four word problems, applying the concept of percent change to real-world scenarios. Throughout the video, Mr. J emphasizes the importance of using the original value for calculations and provides tips for converting decimals to percentages.

What is the first step in calculating percent change?

• Multiply the original value by 100

• Subtract the original value from the new value

• Divide the new value by the original value

• Add the original and new values

If an original value of 45 decreases to 36, what is the percent change?

• 20% increase

• 25% decrease

• 20% decrease

• 25% increase

In example 2, what was the percent increase when the value changed from 16 to 28?

• 75% increase

• 50% increase

• 100% increase

• 25% increase

What does a 150% increase indicate about the original value?

• The original value increased by half

• The original value tripled

• The original value remained the same

• The original value doubled

In example 4, what was the percent decrease when the value changed from 80 to 31?

• 40% decrease

• 75% decrease

• 50% decrease

• 61% decrease

How much did the population increase in example 5?

• 15% increase

• 25% increase

• 20% increase

• 18.75% increase

What does the term 'depreciated' mean in the context of example 6?

• The value increased

• The value decreased

• The value doubled

• The value remained constant

In example 7, what was the approximate percent increase in YouTuber subscribers?

• 36% increase

• 75% increase

• 50% increase

• 25% increase

What was the percent decrease in the selling price of the house in example 8?

• 15% decrease

• 5% decrease

• 10% decrease

• 20% decrease

When rounding a decimal to the nearest percent, which place value is considered?

• Ones place

• Hundredths place

• Tenths place

• Thousandths place