Reply to How much pitch change til the key changes?

On the Armin Van Buuren video he said pitch +/- 8 bpm's is about a key change.

and on the 9 inch remix site it says pitch +/- 3% is a key change.

But I noticed if I pitched up a 126bpm track to 130, its already 3%...

How much pitch change until the key changes?

thx