What do you mean by total changes brought about is 1???
So many effing changes have come about, you blind or what?? These are some of UPA's achievements -
1. Let off Afzal 2. Let off Bombay blasts' culprits. 3. Let off Commie thugs who massacred people in Nandigram. 4. Loot the country in the name of SEZs. 5. Loot the country through dirty share market dealings. 6. Rape the country's honour by driving out Taslima after almost killing her. 7. Divide the country and encourage freeloaders and kick out hardworkers by increasing reservation in colleges. 8. Threaten to bring in reservation in pvt sector. 9. Lathi charge AIIMS students who are literally the best medical talent in the world. 10. Always pander to Muslims and say that Muslims have first right over country's resources. 11. Encourage regionalism everywhere. 12. Let China keep molesting the country's border. 13. Make whole hearted effort to keep the North East burning. 14. Totally give up on Tibet. 15. Totally surrender country's food security - allow poor to die due to hunger. 16. Superb achievement currently in progress is the super high inflation.
More achievements are there... but I think 16 will do for now.