Redirect to expectations rather than refusing. Something like: "I'd rather not share my current number since it reflects a role with different scope, but I'm targeting 95-105k for this kind of position and I'd expect that to be in range — is it?"
That does three things. It answers the underlying question, which is whether you're affordable. It puts your number in the conversation instead of theirs. And it hands the ball back so they have to say yes or no, which saves you both a wasted screen.
I have used almost exactly that wording maybe a dozen times and never once lost an interview over it. Recruiters mostly want to avoid wasting a hiring manager's time, not to trap you.