Note that whether or not
the is used doesn't depend on the % symbol. It depends on the sentence, and
the is used as per the normal rules.
There's a piece of land we own. 90% of the land (we're talking about) is cultivated. [
The has to be used]
65% of children play computer games. [Not
the children, unless it is specified which children are we talking about].
Examples are from oxford
So to know whether or not
the is needed, we'll require your whole sentences with context.
Same goes for
in. It is included/omitted as per the normal rules.
In is required
- In most of the cases, we succeeded
- In 70% of the cases, we succeeded
In is not required
- We can notice that most of the times...
- We can notice that 20% of the times....
Don't let the mathematical symbols confuse you. As a matter of fact, you should always write
fifty percent instead of