How do I work out my 10%?

I have 118lbs to lose - would I need to lose 11.8lbs to get my 10%??

Surely not?

That means I am already there?

Or is it 10% of original weight

Hold on - I think I have it! I need to lose 25lbs to get to my 10%

To find 10% just move the decimal from the end of the number to the 1st place to the left. For example if you weigh 208 lbs then 208. becomes 20.8 lbs which would be 10%. Hope that was clear lol and hope it helps.
edi

edited to add example