Answer:
About 53% of guests did not call for room service
Explanation:
Total number of guests is 170+255= 425 guests total
Number of guests who didn’t call room service divided by the total number of guests gives us the percentage of guests who didn’t call room service
255/425 = 0.529412
Multiply by 100 to get a percentage
= 52.9412%
We can round to 53%.