Percent of Change & NEW AMOUNT

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 Amount - Original Amount) / Original Amount x 100%.

Front

How do you calculate the New Amount after a percentage decrease?

Back

To calculate the New Amount after a percentage decrease, use the formula: New Amount = Original Amount - (Original Amount x Percentage Decrease).

Front

How do you calculate the New Amount after a percentage increase?

Back

To calculate the New Amount after a percentage increase, use the formula: New Amount = Original Amount + (Original Amount x Percentage Increase).

Front

If a quantity decreases by 15%, what fraction of the original amount remains?

Back

If a quantity decreases by 15%, 85% of the original amount remains, which can be expressed as 0.85 of the original amount.

Front

What is the formula to find the percentage decrease?

Back

Percentage Decrease = (Original Amount - New Amount) / Original Amount x 100%.

Front

What is the formula to find the percentage increase?

Back

Percentage Increase = (New Amount - Original Amount) / Original Amount x 100%.

Front

If Oliver's points decreased from 840 by 15%, what is the calculation to find his new total points?

Back

New Total Points = 840 - (840 x 0.15) = 714 points.

Front

If Hannah has 56 books and decreases her collection by 75%, how many books does she have left?

Back

Books Left = 56 - (56 x 0.75) = 14 books.

Front

Rohan drove 12,000 miles last year. If he increases his driving by 5%, how do you calculate the new miles?

Back

New Miles = 12,000 + (12,000 x 0.05) = 12,600 miles.

Front

Mary has 230 stamps and reduces her collection by 30%. How many stamps does she have left?

Back

Stamps Left = 230 - (230 x 0.30) = 161 stamps.