Excel offers a myriad of functions that can help you extract specific information from your data. To find the largest negative value (a number less than 0), you can use the MAX function in combination with the IF function. Here's how to do it:

Step 1: Identify Your Range

First, identify the range of cells where you wish to find the largest negative value.

Step 2: Apply the MAX and IF Functions

Next, apply the MAX and IF functions. Enter the following formula into a new cell: =MAX(IF(A1:A10<0, A1:A10)), where A1:A10 is your identified range. This formula checks if a value is less than 0 and compares it to the largest negative value found so far. It then keeps track of the largest negative number it has seen.

Step 3: Use Array Formula

Because this is an array formula, press Ctrl + Shift + Enter instead of just Enter when you finish typing. Excel will surround your formula with curly braces {} to indicate that it's an array formula.

Step 4: Confirm Your Result

Finally, make sure that the resulting value is indeed the largest negative number in your range.