Why does SQL Server round off results of dividing two integers?

Question

I have a table with a smallint column that contains percentages as whole numbers (i.e., 50, 75, 85, etc.)

When I divide this column by 100, as in

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Answer 1

When you are using /(Divide) operator it

Returns the data type of the argument with the higher precedence.

and

If an integer dividend is divided by an integer divisor, the result is an integer that has any fractional part of the result truncated.

So, you need to cast at least one of the operands to appropriate type: decimal and numeric or float or real.