-88.86% is the change from 449 to 50
Calculation steps:
[( 50 - 449 ) ÷ 449] x 100 = -88.86%
Formula
Percentage change = [(50 - 449) / 449] x 100
Subtract the new number by the original number
50 - 449 = -399
-399 ÷ 449 = -0.888641425389755
-0.888641425389755 x 100 = -88.86%