Wrong WolframAlpha result for: -80% - 1

[akane (Adam Kane)]

WolframAlpha gives me the wrong result for:
-80% - 1

-80% - 1 - Wolfram|Alpha

It should be: -0.8 - 1.0 = -1.8

What am I doing wrong?

[brucem (Bruce Miller)]

I don’t see anything you did wrong.

I duplicated it and used the Contact Us window at the bottom of the wolframalpha.com page to report it.