Convert hardcoded percent 0-100 to 0.00-1.00 #2289

At first it seems like a regression for Bangladesh test cases, but
those particular values were correct in the first place. And it
definitely a huge improvement for other countries such as Cambodge
and Afghanistan, where we had values terribly wrong values
Excluded references in formulas are correctly excluded #2289

We used to have value for Total part when we should have not, because
it is based on other parts which are excluded but formulas didn't take
into account this exclusion.