-87.31% is the change from 449 to 57
Calculation steps:
[( 57 - 449 ) ÷ 449] x 100 = -87.31%
Formula
Percentage change = [(57 - 449) / 449] x 100
Subtract the new number by the original number
57 - 449 = -392
-392 ÷ 449 = -0.8730512249443207
-0.8730512249443207 x 100 = -87.31%