Please add some more details to your question. It's not clear what you're asking.
If you're getting differences for values that you expect to be the same, look at the FUZZ and CRITERION options in PROC COMPARE.
@vandhan wrote:
One value
3.92356
production - format 10.5. value calucated by sum of 4 variables.
validation side - value calculated by using converting char value to numeric with best. format then used format 10.5
How can we match values?
Normally getting mathematical difference. values not matching.