North America "Decode" debuted at number 35 on the
Alternative Songs (then called Hot Modern Rock Tracks) chart dated October 25, 2008. It reached a peak position of 5 on the chart dated January 31, 2009, giving the band their third top ten hit on the chart, and spent 10 weeks in the top ten. "Decode" debuted at number 34 on the
Billboard Hot 100 chart dated November 22, 2008, a career-best debut at the time. Seven weeks after its debut, it reached a new peak of 33, on the chart dated January 10, 2009. This earned the band their second top forty hit. In March 2019, the single was certified 2× Platinum by
RIAA, indicating sales of over 2,000,000. It rose 30 places (from 78 to 48) on the chart dated January 10, 2009 and peaked at this ranking. This earned the band their first top fifty hit in that country.
International In Australia, "Decode" debuted at number 36 on the
ARIA Singles Chart for the week of November 24, 2008, the group's first top fifty effort. The song reached a peak position of 12 in its tenth week, on the chart of January 26, 2009. "Decode" was certified Gold by
ARIA in 2009 and was later certified Platinum in 2010. The song was certified Platinum by
Recorded Music NZ in March 2015, indicating sales of over 15,000. The song also peaked at number 59 in Austria, 9 in Finland, 10 in France (their highest peak to date), 47 in Germany, 53 in Japan, and 60 in Switzerland. ==Music video==