Question

the number 78 is decreased to 72. what is the percentage by which the number was decreased, to the nearest tenth of a percent?

Explanation:

Step1: Calculate the amount of decrease

$78 - 72 = 6$

Step2: Find the decrease percentage

$\frac{6}{78} \times 100\% \approx 7.7\%$

Answer:

7.7%