-88.64% is the change from 449 to 51
Calculation steps:
[( 51 - 449 ) ÷ 449] x 100 = -88.64%
Formula
Percentage change = [(51 - 449) / 449] x 100
Subtract the new number by the original number
51 - 449 = -398
-398 ÷ 449 = -0.8864142538975501
-0.8864142538975501 x 100 = -88.64%