Does height weight?

I am a 14yo , i am 170cm tall and i weight 78 kg.
i know im overweight but im proud of myself because i've lost 8kg in 2 months and i am supposed to loose 5 more this month.
when people know my weight they are surprised they say i look skinnier (even the school nurse and my dietitian said that). i am still growing (in three months i got 2 cm taller). so i was wondering, does my height weight?
Updates
+1 y
in case you did not understand my question, i meant does my height affect my weight?
Does height weight?
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