Exercise 12 Page 148

To determine a 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 2008 and the new amount is 1975, which is a decrease. 2008-1975= 33 The difference between the new amount and the original amount is 33. Now we can use the formula.

Percent change=Amount of decrease/Original amount

SubstituteValues

Substitute values

Percent change=33/2008

UseCalc

Use a calculator

Percent change ≈ 0.02

WritePercent

Convert to percent

Percent change ≈ 2 %

The percent decrease is approximately 2 %.