Problemas con los bat

por que si yo tenia 25 bat ahora tengo 11.40 no entiendo

Sorry, you post it neither in English (so I had to use google translate to understand what you’re saying) nor does it provide enough information to solve your problem.
What should I do with the information “It had 25 bats and no it has 12 bats”, please write in in English and provide more information on the topic.