[Chartjs]-How Can customize chartjs doughnut chart border and tooltip

The percentage of the chart that is cut out of the middle is defined by cutoutPercentage, e.g.:

options: {
    cutoutPercentage: 80, 
}

Add percentageInnerCutout: 70 in options

options: {
percentageInnerCutout: 70, // make doughnut chart slim
}