I am really glad you didn't go through with it. Going through all of the messages between you guys, it very obvious that the person is a fraud. Scammers loves to use the word ''Small Percentage'' to gain people's trust and make it sound like a fair deal, but when you give them access and follow their words, it usually end with regrets.
     And again Telegram is one of the biggest joint for crypto related scams,[b/]most especially when you are just messaged by a random stranger who you have never met or chatted with before in your life. My advice to you in situations like this is that you shouldn't share your personal details with them, just block as many of them as possible and move on. Life is too precious to waste with those scammers.