╭        p =  some point       ╮
      │         1                    │
      │        p =  some other point │
      │         2                    │
Given │  distance= (p  - p )         │,  our new point = p  +  distance  ·  ratio
      │              2    1          │                    1
      │             percentage       │
      │     ratio= ───────────       │
      ╰                100           ╯