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.
Spanish Translation
Tus torres y trampas infligen <Highlight>{{ATTACK_DAMAGE_CHANGE_PERCENT:percent}}%</> de daño adicional por cada nivel que tengan, pero requieren <N_Highlight>{{REQUIRED_TOWER_EXP_CHANGE_PERCENT:percent}}%</> más experiencia para subir de nivel.