Class: Maths::Percentage

Inherits:
BigDecimal
  • Object
show all
Defined in:
lib/maths/percentage.rb

Overview

Public: Represents a number that should be formatted as a percentage

Class Method Summary collapse

Class Method Details

.build(numerator, denominator) ⇒ Object

Public: Builds out a fraction by the numerator and denominator



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# File 'lib/maths/percentage.rb', line 7

def self.build(numerator, denominator)
  numerator = BigDecimal.new(numerator.to_s)
  denominator = BigDecimal.new(denominator.to_s)
  Percentage.new(((numerator / denominator) * 100).to_s)
end

.change(from, to) ⇒ Object

Public: Calculates the % change of from to to



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# File 'lib/maths/percentage.rb', line 14

def self.change(from, to)
  Percentage.new((((to / from) - 1) * 100).to_s)
end