Indeed, after your payment history, your credit utilization is the most important factor influencing your credit score. (creditcardsmarts.org)
For example, if you have too much debt on your credit card and any other kind of consumer loans your debt ratio will increase and this will negatively influence your credit score. (personalmoneyservice.com)
It will not influence your credit score directly, but it will help you tackle your debt and, consequently, raise your score. (effectify.com)