Citigroup will have to pay consumers $335 million after failing to reevaluate and reduce annual percentage rates for consumer credit card accounts, the Bureau of Consumer Financial Protection announced Friday. Citi imposed interest charges on an estimated 1.75 million consumer accounts in excess of $335 million of what should have been imposed, the agency said. No fine on top of that was given to Citi because the bank self-identified the problem and reported the violations to the agency.