The recall covered an estimated 597,630 vehicles (primarily 2021–2024 Cadillac Escalade/ESV, Chevrolet Silverado 1500/Suburban/Tahoe, and GMC Sierra 1500/Yukon/Yukon XL models with L87 engines built between March 1, 2021, and May 31, 2024).
Simple division: 28,102÷597,630≈0.04728
(or 4.7%).