Answer:
80%
Step-by-step explanation:
It would be irrational, as it has non repeating digits to the right of the decimal.
It is 397.8 bc if u make 530.4 a fraction = 530.4/1 then u just multiply it by 3/4 u will get 1591.2/4 then u simply reduce it by dividing ( top in , bottom out ) and u get 397.8