I would like to add % symbol after acts value (Sydney Pro/Sydney FP: Facts)

I would like to add the % symbol for one fact value.

I know I can add % symbol after all fact with custom css:

.numb-count:after {
    content: '%';
}

But I would like to add that symbol after the third fact only…
Can anyone help please?

The answer was use Custom CSS and use the number to determine whict fact get the % symbol
Sorry about the trouble…

.sydney_facts_widget .col-md-3:nth-of-type(1) .numb-count::after {
    content: '%';
}