A well tested solution is to paste the text into the address bar of your web browser and it will remove the formatting, so you can then directly copy and paste it into your document.
Currently the most popular web browsers remove the formatting for internal use and appealing UI.
*** Solution for Safari ***
From your Safari menu bar click Safari > Preferences then select the Passwords tab.
Select the finance website then click Remove.
Now open Keychain Access located in HD > Applications > Utilities
Select Passwords on the left.
Type in the name of the website in the search field top right corner of that window. If there's a keychain available, right or control click the keychain then click Delete.
One solution to this problem is:
-Open Chrome on your computer.
-At the top right, click More and then click configuration.
-At the bottom, click Advanced settings.
-In the "Passwords and forms" section, click Manage passwords.
-In the "Saved passwords" section, on the right side of the website, click More and then click on Delete