Working Capital For FCFF Issue

Hey guys, hope you’re all doing well.

Im having trouble with the Working Capital part of the Formula for FCFF. I would like a surefire way to calculate it quickly. Also, the formula is FCFF = NI + NCC + Int(1-t) - FCInv MINUS WC. The MINUS part, should it impact the final number? So if i have a net of -45 WC, it will become +45 in the formula -(-45)? These are the doubts that I am having. If anyone has an easy way to ensure accuracy when getting the final number, that would be fantastic. Thanks.

For clarification, the formula calls for the change in working capital. If working capital increases, that is a use of cash so it would be a negative value in the FCFF equation. If working capital decreases, that is a source of cash so it would be a positive value in the FCFF equation.