I am using blazor apex-chart in .net 8 Blazor Wasm

How can i see the percentage of each value in Blazor apex-chart, right now my code is this which is not working

DataLabels = new DataLabels
{
    Enabled = true,
    Formatter = @"function (val) {return val +"+ 'u0022' +"%" + 'u0022' +"}"
}

i want something like this but this code not working for me.