English (Source)
Your towers and traps deal <Highlight>{{ATTACK_DAMAGE_CHANGE_PERCENT:percent}}%</> bonus damage for each level they have, but they require <N_Highlight>{{REQUIRED_TOWER_EXP_CHANGE_PERCENT:percent}}%</> more experience to level up.
Japanese Translation
タワーとトラップはレベル1ごとに<Highlight>{{ATTACK_DAMAGE_CHANGE_PERCENT:percent}}%</>の追加ダメージを与えるが、レベルアップに必要な経験値が<N_Highlight>{{REQUIRED_TOWER_EXP_CHANGE_PERCENT:percent}}%</>増加する。