Question

The price of a cup of coffee has dropped to $2.20 today. Yesterday's price was $2.35. Find the percentage decrease. Round your answer to the nearest tenth of a percent.

Answer 1

6.4% decrease is the correct answer 

Answer 2

Convert the dollar amounts to cents to make the math easier.

$2.20 = 220¢
$2.35 = 235¢

The original price is 100%
The new price is x%

220/235 ≈ 0.93

Convert decimal into a percent by moving the decimal two places to the right and adding the % sign.

0.93 = 93%

100% - 93% = 7%

So, there was a 7% decrease in price.