Rounding to 2 decimal places ONLY

[Leah289707468b8g]

I have a form in which I am using the below custom calculation script:

// Acquire Inputs
var nA = Number(this.getField("Yes1").valueAsString);
var nB = Number(this.getField("TotalOSAudited").valueAsString);
var nSum = Number(this.getField("YesPerc1").valueAsString);

// Perform Calculation
var nSum = (nA / nB)*100;

// Assign Result to Field
event.value = nSum;

The select format category is None.  I need the calculation to round to 2 decimal places ONLY.  I have spent the last two days going cross eyed searching for the answer.  I am a newby to any sort of script.  Thanks for the help!

[Nesa Nurani]

You also need to check that nB is not 0, or you will get NaN error because of trying to divide with zero.

To make two decimals, use like this:

event.value = nSum.toFixed(2);

Why do you declare var nSum to field "YesPerc1" and then also declare it again in calculation?