Decimal point in Excel - 200 appears as 2 when I press enter

Hi,

Hope someone can help me. Somehow my entire Excel number format has changed. My Excel version is 2010.

Whenever I try to enter 200, it returns me as 2. Or 3000 as 30

I have checked all formats like General, Number etc but unable to find where the error is. (Please refer to attached image of the file)

Hope someone can help me to fix this.

Many Thanks!