A shirt originally cost $42.54, but it is on sale for $29.78. What is the percentage decrease of the price of the shirt? If necessary, round to the nearest percent.

The difference is 30%

Step-by-step explanation:

To find the percent decrease, start by finding the difference in costs.

42.54 - 29.78 = 12.76

Now divide that amount by the original cost.

12.76/42.54 = 30%