Stuck on this which im sure there is an easy solution to, just cannot work it out!! 

I have tried decmialformat, numberformat, string.format() etc and nothing works. .

code below, i want to calculation to just show the output limited to 2 decimal places. Have spent the last 2 hours trying various methods all of which causes the app to crash when run... 

```
    Output = (Output1 / (1 -(Output2/100)))

    String OutputString = String.valueOf(Output);

    Num.setText(OutputString);

```