SQL precision problem

I'm trying to figure out how SQL arithmetic involving decimals is giving an integer result. I've put together a sample query that replicates my question.

with Values as (
select cast(1.5267 as decimal(31,4)) as A, cast(1.6 as decimal(12,4)) as B
from SYSIBM.SYSDUMMY1
)
select Values.*, (A - B) / B * 100.00 as RESULT
from Values;

This gives: 1.5267 1.6 0


The RESULT column has a type of decimal(31,2), but the value is zero. With a precision of 2, RESULT should actually be -4.58.