how to change styles in google charts?

good I have my graphic so

The problem I have is that it shows me the percentages all on top, is there something to not show them that way? try to make the bars wider but no, try to make the graph wider but you can not anymore

these are the options I have

    var classicOptions = {
              width: '1800px',
              height: '900px',
                title: 'Porcentaje por mes',

              bar: { groupWidth: "90%" },

 annotations: {
          textStyle: {'fontSize': 10.8}},

              series: {

                1: {targetAxisIndex: 1}
              }

            };

or how could the smallest letter of role:'annotation' I was able to update