-87.58% is the change from 451 to 56
Calculation steps:
[( 56 - 451 ) ÷ 451] x 100 = -87.58%
Formula
Percentage change = [(56 - 451) / 451] x 100
Subtract the new number by the original number
56 - 451 = -395
-395 ÷ 451 = -0.8758314855875832
-0.8758314855875832 x 100 = -87.58%