execute store result score #tmp stats_calc run data get entity @s Health 1000
execute store result score #tmp1 stats_calc run attribute @s generic.max_health get 1000

scoreboard players operation #tmp1 stats_calc -= #tmp stats_calc
scoreboard players set #tmp stats_calc 75
scoreboard players operation #tmp1 stats_calc *= #tmp stats_calc
scoreboard players set #tmp stats_calc 100
scoreboard players operation #tmp1 stats_calc /= #tmp stats_calc

scoreboard players operation armor stats_calc += #tmp1 stats_calc
