-20.51% is the change from 907 to 721
Calculation steps:
[( 721 - 907 ) ÷ 907] x 100 = -20.51%
Formula
Percentage change = [(721 - 907) / 907] x 100
Subtract the new number by the original number
721 - 907 = -186
-186 ÷ 907 = -0.20507166482910694
-0.20507166482910694 x 100 = -20.51%