Mortgage programming language; how should percentage appear?

[HobbyPi]

In 2008. Stockmarket crash. Most of you heard about subprime mortgage crisis, ninja loans, scams, fake percentage, bad loans, etc. http://en.wikipedia.org/wiki/Subprime_mortgage_crisis

I really confuse. I've google and test online mortgage calculators. None of these mortgage calculators were useful. They are too difficult to understand. But they compute numbers correctly.

Anyways. I need help. Does anyone have website or early history how mortgage percentage was made? Some countries use percentage & currency differently.

How should the real percentage appear on mortgage calculator?

if I type : 1
Should 1 appear as:
1.0 %
0.1%
1%

I can't find on economics text book or anywhere. I'm living US which percentage should I use?

[simonpb1]

1%

[Markodius]

Hmm.. the most accurate and replete source of information concerning the crash I found here..

http://www.youtube.com/watch?v=mzJmTCYmo9g

For those with interest there is an advanced exploration..

http://www.youtube.com/watch?v=9z70BKwfSUA