Yesterday 170 guests at a hotel called for room service, and 255 guests did not call for room service. what percentage of the guests at this hotel called for room service yesterday?

The percentage of the guests at this hotel called for room service yesterday is 40%
-
Step-by-step explanation:
We are given
total number of guests called for room services =170
total number of guests did not called for room services =255
now, we can find total number of guests
Total number of guests =(total number of guests called for room services)+(total number of guests did not called for room services)
so,
total number of guests is
=170+255
=425
now, we can find percentage
percentage of the guests at this hotel called for room service yesterday is %40
So,
The percentage of the guests at this hotel called for room service yesterday is 40%