-27.39% is the change from 993 to 721
Calculation steps:
[( 721 - 993 ) ÷ 993] x 100 = -27.39%
Formula
Percentage change = [(721 - 993) / 993] x 100
Subtract the new number by the original number
721 - 993 = -272
-272 ÷ 993 = -0.27391742195367574
-0.27391742195367574 x 100 = -27.39%