Percent of Change

Front

What is Percent of Change?

Back

Percent of Change is a way to express how much a quantity has increased or decreased in relation to its original amount, calculated as (New Value - Original Value) / Original Value x 100%.

Front

How do you calculate the percent decrease?

Back

Percent Decrease = (Original Value - New Value) / Original Value x 100%.

Front

How do you calculate the percent increase?

Back

Percent Increase = (New Value - Original Value) / Original Value x 100%.

Front

If a price goes from $200 to $150, what is the percent decrease?

Back

Percent Decrease = (200 - 150) / 200 x 100% = 25%.

Front

If a price goes from $50 to $75, what is the percent increase?

Back

Percent Increase = (75 - 50) / 50 x 100% = 50%.

Front

What is the formula for finding the new price after a percent discount?

Back

New Price = Original Price - (Original Price x Discount Percentage).

Front

If a shirt originally costs $40 and is on sale for 25% off, what is the sale price?

Back

Sale Price = 40 - (40 x 0.25) = $30.

Front

What does a 10% increase mean in terms of a quantity?

Back

A 10% increase means the quantity has grown by 10% of its original amount.

Front

If a population of 200 increases by 20%, what is the new population?

Back

New Population = 200 + (200 x 0.20) = 240.

Front

What is the percent change if a product's price changes from $80 to $64?

Back

Percent Change = (80 - 64) / 80 x 100% = 20% decrease.