-89.86% is the change from 720 to 73
Calculation steps:
[( 73 - 720 ) ÷ 720] x 100 = -89.86%
Formula
Percentage change = [(73 - 720) / 720] x 100
Subtract the new number by the original number
73 - 720 = -647
-647 ÷ 720 = -0.8986111111111111
-0.8986111111111111 x 100 = -89.86%