Sogndal were down by 2-0 heading to the 90th-minute mark before Mahatma Otoo pulled one back.
Mahatma Otoo was on target for his club in their 1-2 defeat on Sunday.
The goal is Mahatma’s third for the hosts in 14 games in the top-flight.
The defeat was a shocking one to Sogndal, who were undefeated in their past 4 games, having won 2 and drawn two prior to the defeat at the weekend.
Sogndal are lying 9th in the 16-club Norwegian top-flight league