Exercise 68 Page 459

To determine percent change p, we can use the following general formula. p % =Amount of increase or decrease/Original amountFrom the given values, we can see the original amount was $1450 and the new amount is $999. This is a decrease in the amount. $1450-$999= $451 The difference between the new amount and the original amount is $451. Now we can use the formula.

Percent change=Amount of increase/Original amount

SubstituteValues

Substitute values

Percent change=451/1450

UseCalc

Use a calculator

Percent change=0.3110344828

WritePercent

Convert to percent

Percent change = 31.10344828 %

RoundInt

Round to nearest integer

Percent change = 31 %

The percent decrease is 31 %.