osrs combat func

function getHitChance(attackLevel, attackBonus, defenseLevel, defenseBonus) {
    let attackRoll = (attackLevel * (attackBonus + 64));
    let defenseRoll = (defenseLevel * (defenseBonus + 64));
    let totalRoll = attackRoll + defenseRoll;
    return (attackRoll / totalRoll * 100) + '%';
}

console.log('Power ammy is 6 att bonus difference:');
console.log('Hit chance player vs green dragon, 40 att, +38 stab', getHitChance(40, 38, 68, 20));
console.log('Hit chance player vs green dragon, 40 att, +44 stab', getHitChance(40, 44, 68, 20));
console.log('Hit chance player vs green dragon, 40 att, +45 slash', getHitChance(40, 45, 68, 40));
console.log('Hit chance player vs green dragon, 40 att, +51 slash', getHitChance(40, 45, 68, 40));

console.log('Hit chance player vs green dragon, 61 rng, +127 range', getHitChance(61, 127, 68, 20));