PacemInputNumberElement is the suggested webcomponent for numeric (plain, w/ unit, currency, ...) editing.
PacemInputNumberElement edited value can be formatted given straight attribute or relevant metadata.
[ {"prop": "amount", "type": "float", "display": { "name": "Progress", "format": { "style": "percent", "maximumFractionDigits": 2, "minimumFractionDigits": 2 } }, "extra": { "step": 0.005 }, "validators": [{ "type": "range", "errorMessage": "Nope, you can't", "params": { "min": 0, "max": 1 } }] } ]