jQuery find if closest element contains something then add CSS

I want to change the background of a div if the text from the closest element contains something. I realize that this probably is a duplicate but I simply can't find where it goes wrong. I'm not getting an error.

if (jQuery(".price-box").closest(".product").find(".product-title a").is(":contains('90')")) {
  jQuery(this).closest(".product").find(".price-box").css('background-color', 'red');
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="product">
  <div class="image-box">
    <div class="price-box">Pricing</div>
  </div>
  <div class="box-text">
    <div class="title-wrapper">
      <p class="product-title">
        <a href="#">Title 90</a>
      </p>
    </div>
  </div>
</div>

If someone can enlighten me where my jQuery goes wrong I'd appreciate that alot.