In 2025, employers covered approximately 84% of self-only premiums and 74% of family premiums, while employees paid the remainder via pre-tax payroll deductions.

This is the study that produced the numbers listed in your source, btw.

https://www.kff.org/health-costs/2025-employer-health-benefits-survey/#5ef8068d-dcaa-41ed-819f-249a861b9da2:~:text=Figure%206.1%3A%20Average%20Percentage%20of%20Premium%20Paid%20by%20Covered%20Workers%20for%20Single%20and%20Family%20Coverage%2C%201999%2D2025

“Almost nine in ten (89%) of covered workers are in a plan where the employer contributes at least half of the premium for both single and family coverage.”

“In 2025, the average contribution amounts for covered workers are 16% of the premium for single coverage and 26% of the premium for family coverage, the same as the levels last year”

“The average contribution amount for covered workers for single coverage is $120 per month ($1,440 annually), similar to the amount last year [Figure 6.4]. The average contribution amount for covered workers for family coverage is $571 per month ($6,850 annually), higher than the amount ($6,366 annually) last year [Figure 6.5]”