[
  "Start from the value you know (Box D = 200) and work forward, applying each percentage change one at a time.",
  "Box C = 125% of Box D, Box B = 140% of Box C, Box A = 70% of Box B.",
  "Multiply: 200 * 1.25 = 250, then 250 * 1.40 = 350, then 350 * 0.70 = 245."
]