-55.79% is the change from 726 to 321
Calculation steps:
[( 321 - 726 ) ÷ 726] x 100 = -55.79%
Formula
Percentage change = [(321 - 726) / 726] x 100
Subtract the new number by the original number
321 - 726 = -405
-405 ÷ 726 = -0.5578512396694215
-0.5578512396694215 x 100 = -55.79%