Is it not possible to bind a value with converter in the annotation of circulargauge?
<gauge:SfCircularGauge
Grid.Row="12"
Grid.Column="1"
Grid.ColumnSpan="3"
HeightRequest="150"
WidthRequest="150">
<gauge:SfCircularGauge.Annotations>
<gauge:GaugeAnnotation HorizontalAlignment="Center" VerticalAlignment="Center">
<gauge:GaugeAnnotation.View>
<Label Style="{StaticResource XXLargeBoldLabelStyle}">
<Label.FormattedText>
<FormattedString>
<Span Text="{Binding BudgetStatement.TotalIncomeBudget, Converter={StaticResource currencyFormConverter}}" />
<Span Text=" " />
<Span Text="{Binding BudgetStatement.FinancialPlan.Currency.Symbol}" />
</FormattedString>
</Label.FormattedText>
</Label>
</gauge:GaugeAnnotation.View>
</gauge:GaugeAnnotation>
</gauge:SfCircularGauge.Annotations>
<gauge:SfCircularGauge.Scales>
<gauge:Scale
EndValue="100"
Interval="10"
RadiusFactor="1"
RimColor="#e0e0e0"
RimThickness="25"
ShowLabels="False"
ShowTicks="False"
StartAngle="270"
StartValue="0"
SweepAngle="360">
<gauge:Scale.Pointers>
<gauge:RangePointer
RangeCap="None"
Thickness="25"
Offset="1"
Color="#01bdae"
Value="70" />
</gauge:Scale.Pointers>
</gauge:Scale>
</gauge:SfCircularGauge.Scales>
</gauge:SfCircularGauge>