Razor component code:

@page "/percent-cal"
@using BlazorApp1.Data

<EditForm Model="@cashDebtors" OnValidSubmit="@HandleValidSubmit">
    <InputNumber @bind-Value="@CashDebtorsPercent" />
    <InputNumber id="Debtors60" @bind-Value="DebtorsPercent60" @oninput="@(e =>{ DebtorsPercent60 = Convert.ToInt32(e.Value == null? 0: e.Value); UpdateCashDebtors();})" />
    <InputNumber id="Debtors90" @bind-Value="DebtorsPercent90" @oninput="@(e =>{ DebtorsPercent90 = Convert.ToInt32(e.Value == null? 0: e.Value); UpdateCashDebtors();})" />
    <InputNumber id="Debtors120" @bind-Value="DebtorsPercent120" @oninput="@(e =>{ DebtorsPercent120 = Convert.ToInt32(e.Value == null? 0: e.Value); UpdateCashDebtors();})" />
    <InputNumber id="Debtors120Plus" @bind-Value="DebtorsPercent120Plus" @oninput="@(e =>{ DebtorsPercent120Plus = Convert.ToInt32(e.Value == null? 0: e.Value); UpdateCashDebtors();})" />

    <button type="submit">Submit</button>
</EditForm>

@code {
    private CashDebtors cashDebtors = new();
    private int CashDebtorsPercent = 0;
    private int DebtorsPercent60  = 0;
    private int DebtorsPercent90  = 0;
    private int DebtorsPercent120  = 0;
    private int DebtorsPercent120Plus  =0;

    private void UpdateCashDebtors()
    {
        CashDebtorsPercent = 100 - (DebtorsPercent60 + DebtorsPercent90 + DebtorsPercent120 + DebtorsPercent120Plus);
    }


    private void HandleValidSubmit()
    {
        CashDebtorsPercent = 100 - (DebtorsPercent60 + DebtorsPercent90 + DebtorsPercent120 + DebtorsPercent120Plus);
        
        //Logger.LogInformation("HandleValidSubmit called");

        // Process the valid form
    }
}