Decrease Tracker Value
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iOS 14 +
Decreases the current value of the specified tracker
decreaseNumberTracker(tracker: <#Object (Tracker)#>, amount: <#Double#>, note: <#String (Allows Variables)#>)
decreaseNumberTracker(tracker: Tracker(identifier: "abcde-f", displayString: "Hello World"), amount: 42, note: "This is a cool tracker!")