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 now $40, what is the percent of decrease?

Back

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

Front

What does a percent increase indicate?

Back

A percent increase indicates how much a value has grown compared to its original value.

Front

If a shirt originally cost $20 and is now $25, what is the percent of increase?

Back

Percent of Increase = (25 - 20) / 20 × 100% = 25% increase.

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 = Original Price + (Original Price × Sales Tax Rate)

Front

If an item is priced at $30 with a 10% sales tax, what is the total cost?

Back

Total Cost = 30 + (30 × 0.10) = $33.

Front

What is the difference between percent increase and percent decrease?

Back

Percent increase measures growth, while percent decrease measures reduction in value.

Front

If Jessica collected 120 cans in June and 150 in July, what is the percent change?

Back

Percent Change = (150 - 120) / 120 × 100% = 25% increase.

Front

What is the percent change if a jacket's price drops from $40 to $30?

Back

Percent Change = (30 - 40) / 40 × 100% = 25% decrease.