Field% = field 1÷ field 2

eg = 120 ÷ 70000 = 0.00171

In my case, currently, I set the decimal padding is equal to two. therefore field % will show as 0.00

Then the issue is that I have another field that is dependent on field % as below.

Field 3 = Amount * field % it will display as 0.00

Then the whole amount = 0.00

How can I solve the issue without changing the decimal padding in the whole accounting module?

please anyone help me to sort this issue. using odoo 8.0

thanks in advance.