-20.94% is the change from 912 to 721
Calculation steps:
[( 721 - 912 ) ÷ 912] x 100 = -20.94%
Formula
Percentage change = [(721 - 912) / 912] x 100
Subtract the new number by the original number
721 - 912 = -191
-191 ÷ 912 = -0.20942982456140352
-0.20942982456140352 x 100 = -20.94%