-89.37% is the change from 687 to 73
Calculation steps:
[( 73 - 687 ) ÷ 687] x 100 = -89.37%
Formula
Percentage change = [(73 - 687) / 687] x 100
Subtract the new number by the original number
73 - 687 = -614
-614 ÷ 687 = -0.893740902474527
-0.893740902474527 x 100 = -89.37%