The lightning:input (Beta) documentation suggests using this markup for percentage input:
<lightning:input type="number" name="percentVal" label="Enter a percentage value" formatter="percent" step="0.01" />
Changing to this:
does allow a value 0f 0.123456 to be entered (and preserved) but it is presented when focus moves away from the field as 12% not 12.4567%.
If there a way to include the extra digits?
stepparameter so I’m assuming the answer to my question is no.)