-78.73% is the change from 409 to 87
Calculation steps:
[( 87 - 409 ) ÷ 409] x 100 = -78.73%
Formula
Percentage change = [(87 - 409) / 409] x 100
Subtract the new number by the original number
87 - 409 = -322
-322 ÷ 409 = -0.7872860635696821
-0.7872860635696821 x 100 = -78.73%