so different score between equifax and trans union

recently I checked my credit report the score between trans union and equifax was so different. Trans Union was only 575 but Equifax was 659 . Can someone tell me why??? 

Both of these bureaus would not have exact same scores but should have similar scores. The reason being, not all lenders report to both credit bureaus. Some report to both, some report to Equifax only and some lender would report to TransUnion only. So, see your reports carefully and find out which of the lenders reported to TransUnion but not to Equifax and see if there is any unfavorable reporting or any late payments by these lenders which is causing the huge gap.