-87.56% is the change from 587 to 73
Calculation steps:
[( 73 - 587 ) ÷ 587] x 100 = -87.56%
Formula
Percentage change = [(73 - 587) / 587] x 100
Subtract the new number by the original number
73 - 587 = -514
-514 ÷ 587 = -0.8756388415672913
-0.8756388415672913 x 100 = -87.56%