-80.18% is the change from 439 to 87
Calculation steps:
[( 87 - 439 ) ÷ 439] x 100 = -80.18%
Formula
Percentage change = [(87 - 439) / 439] x 100
Subtract the new number by the original number
87 - 439 = -352
-352 ÷ 439 = -0.8018223234624146
-0.8018223234624146 x 100 = -80.18%