Your mortgage loan had a principal of $$100,000$ when you first borrowed the money five years ago. The mortgage had an amortization period of $60$ years and the quoted rate on the loan was $8\%.$ You chose to make semi$-$monthly payments $($two payments per month$).$ The payments are $$330\mathrm{.}36.$ How much principal have you paid after $5$ years of payments? $($You just made your $120$th payment yesterday.$)$ Express your answer as a percentage of the original principal $($$$100,000).$