-89.6% is the change from 721 to 75
Calculation steps:
[( 75 - 721 ) ÷ 721] x 100 = -89.6%
Formula
Percentage change = [(75 - 721) / 721] x 100
Subtract the new number by the original number
75 - 721 = -646
-646 ÷ 721 = -0.8959778085991679
-0.8959778085991679 x 100 = -89.6%