Holy Fire Damage Calculation

DD - Direct Damage
DoT - Damage over Time

DD Tooltip Dmg = (Tooltip Maximum Dmg + Tooltip Minimum Dmg)/2
Holy Fire DD Tooltip Dmg = (890 + 1130)/2 =1010

DD Base Dmg = Tooltip Dmg + (Spell Power x Spell Power Coefficient)
@ 2000 Spell Power
Holy Fire DD Base Dmg = 1010 + (2000 x 0.5711) = 2152.20

DD Total Dmg = Base Dmg x % Modifier A x % Modifier B x ... % Modifier Z
@ 2000 Spell Power w/ Talents: Searing Light (10%), Focused Power (4%)
Holy Fire DD Total Dmg = 2152.20 x 1.10 x 1.04 = 2462.12

DoT Base Dmg = Tooltip Dmg + (Spell Power x Spell Power Coefficient)
@ 2000 Spell Power
Holy Fire DoT Base Tick Dmg = 50 + (2000 x 0.024) = 98

DoT Total Dmg = Base Tick Dmg x Number of Ticks x % Modifier A x % Modifier B x ... % Modifier Z
@ 2000 Spell Power w/ Talents: Searing Light (10%), Focused Power (4%)
Holy Fire DoT Total Dmg = 98 x 7 x 1.10 x 1.04 = 784.78

Total Dmg = DD Total + DoT Total
Holy Fire Total Dmg = 2462.12 + 784.78 = 3246.89

Crit Dmg = DD Total x Crit Modifier* + DoT Total
Holy Fire Crit Dmg = 2462.12 x 1.5 + 784.78 = 4477.96

* Crit Modifier is 150% or 1.5. Only Holy Fire's direct damage (DD) component can crit. Damage done by DoT component will remain the same.