There are 32 technicians working the day shift and 19 working the night shift. This means that the total number of technicians is:
Out of those 51 technicians, 19 work the night shift. As a fraction, the relation for the total of technicians that work the night shift would be:
To convert into a percentage, we multiply this fraction by 100:
Thereby, 37.25% of the technicians work a night shift.