Answer: 23%
Explanation:
From the question, we are informed that a new pair of shoes cost $78 and that they are on sale for $60.06.
The percent of change will be calculated as:
Change/ Cost price × 100
= [(78 - 60.06) / 78] × 100
= (17.94 / 78) × 100
= 0.23 × 100
= 23%