Percent of Change

Front

What is the formula to calculate the percent of change?

Back

Percent of Change = (New Value - Old Value) / Old Value × 100

Front

If an item costs $50 and is on sale for $40, what is the percent decrease?

Back

Percent Decrease = (50 - 40) / 50 × 100 = 20%.

Front

What does a percent increase indicate?

Back

A percent increase indicates that the new value is greater than the old value.

Front

If a jacket costs $60 and the price increases to $75, what is the percent increase?

Back

Percent Increase = (75 - 60) / 60 × 100 = 25%.

Front

What is sales tax?

Back

Sales tax is a percentage added to the price of goods and services, collected by the seller.

Front

How do you calculate the total cost of an item including sales tax?

Back

Total Cost = Item Price + (Item Price × Sales Tax Rate).

Front

If an item is priced at $20 and the sales tax is 8%, what is the total cost?

Back

Total Cost = 20 + (20 × 0.08) = $21.60.

Front

What is the difference between percent increase and percent decrease?

Back

Percent increase measures how much a value has grown, while percent decrease measures how much a value has shrunk.

Front

If a student scores 80 out of 100 on a test, what is the percentage score?

Back

Percentage Score = (80 / 100) × 100 = 80%.

Front

What is the percent change if a population grows from 1,000 to 1,200?

Back

Percent Change = (1,200 - 1,000) / 1,000 × 100 = 20% increase.