Dragon Ball Z Super Butouden

[Davy Jones]

When Goku became a super saiyan, Freezer/Frieza builds up his power level to 100% and added more muscles to his body. After Freezer got cut in half by his own destructo disc, Goku gave him some extra energy to survive Namek's destruction, but he got angry and attacked him. Goku counterattacks Freezer's energy beam with his own blast and defeated him. In all of these events, you can see him on 100% (the reason why he lost is that his power level decreases in battle while Goku's remains stable, though).