-20.74% is the change from 921 to 730
Calculation steps:
[( 730 - 921 ) ÷ 921] x 100 = -20.74%
Formula
Percentage change = [(730 - 921) / 921] x 100
Subtract the new number by the original number
730 - 921 = -191
-191 ÷ 921 = -0.20738327904451684
-0.20738327904451684 x 100 = -20.74%