You must log in or register to comment.
K = kilo, which stands for 1000. It’s extremely standard. Saying it’s stupid is like saying $ or π or & or # or % is stupid.
Non standard. That is all.
1k is a common way to shorten 1,000. And 1,000% is an acceptable way to say 10x. But 1k% is definitely a stupid abbreviation that nobody uses.