Discussion on: Daily Challenge #61 - Evolution Rate

const getEvolutionRateMessage = (before, after) => {
   const evolution = before == 0 ? after * 100
   : after == 0 ? -before * 100
   : Math.round((after - before) / before * 100)

   return evolution == 0 ? "No evolution."
   : evolution > 0 ? `A positive evolution of ${evolution}℅.`
   : `A negative evolution of ${Math.abs(evolution)}%.`
}