Answer:
The new record was 91.96%.
Explanation:
As per the given statement: During the World Series the host Citywide Hotel a occupancy Rose 21% over the prior busiest night if the busiest night had been 76% occupancy.
To find the new record of occupancy.
We will find the 21% of 76% and then added it to 76%.

New record =

New record =

New record =

Convert this decimal number into percentage by just multiplying a number by 100 we get;
New record =

Therefore, the new record was 91.96%