Percent of Change

Front

What is Percent of Change?

Back

Percent of Change is a measure that describes how much a quantity has increased or decreased in relation to its original value, expressed as a percentage.

Front

How do you calculate Percent of Change?

Back

Percent of Change = ((New Value - Original Value) / Original Value) x 100.

Front

If the price of an item increases from $50 to $60, what is the percent of change?

Back

20% increase.

Front

If the number of tourists decreases from 55,000 to 18,000, what is the percent of change?

Back

67.3% decrease.

Front

What does a positive percent of change indicate?

Back

A positive percent of change indicates an increase in value.

Front

What does a negative percent of change indicate?

Back

A negative percent of change indicates a decrease in value.

Front

If a student scores 80 on a test and then scores 90 on the next test, what is the percent of change in their score?

Back

12.5% increase.

Front

How would you express a 50% increase in terms of original value?

Back

If the original value is X, the new value would be X + 0.5X = 1.5X.

Front

If a car's speed increases from 20 mph to 30 mph, what is the percent of change?

Back

50% increase.

Front

What is the percent of change if a product's price drops from $100 to $80?

Back

20% decrease.