This information can be found by going to Admin > Meals > Dinner Numbers By Week report.
Choose the date you want to view meal numbers for and click "Filter this page by date"
What you will see under School Meals is a FSM, UFSM and FSM&UFSM column.
This is total number of FSM (Free School Meals) taken, UFSM (Universal Free School Meals) taken and then those figures added together.
You can also see here the number of students having School Meals who are FSM and the numbers having their Own Meals, as the totals are at the base of each FSM column for that day.