It's now at 49%? So that's a 20% change it seems. I wouldn't read too much into it. The website does state that over 90% indicates a "good" chance of bankruptcy...
http://www.macroaxis.com/invest/ratio/SNE--Probability-Of-Bankruptcy
For interest, Nintendo has a greater chance of bankruptcy (75%) according to their website:
http://www.macroaxis.com/invest/ratio/NTDOY.PK--Probability_Of_Bankruptcy







