Hi.

Can you please elaborate why do you want to round-off or truncate your NATA Score?

As far as i know, there is no official rounding off NATA Score method, but you can apply general rounding off rules in this case to round of 134.5

134.5 ~ 134

In this case the digit to be dropped in 5 and the preceding digit i.e '4' is even so the digit is left unchanged hence 134.5 will be rounded off to 134

For further information on NATA Score you can visit this website