How to limit decimal places in formula field?

How to limit decimal places in formula field?

Hi!

I have a formula field with a calculation. Sometimes it de result has lots of decimal places, but i want to limit it to 2 decimal places. I tried the ().round(2) function but it's not working... any ideas here??

( if(dBA = null,"",if(dBA < 80,"",input.TE * 100 / if(dBA > 100,1,if(dBA > 97,25,if(dBA > 94,50,if(dBA > 91,100,if(dBA > 88,200,if(dBA > 85,400,if(dBA > 82,800,if(dBA > 80,1600,2400)))))))))) ).round(2)