-2.39% is the change from 921 to 899
Calculation steps:
[( 899 - 921 ) ÷ 921] x 100 = -2.39%
Formula
Percentage change = [(899 - 921) / 921] x 100
Subtract the new number by the original number
899 - 921 = -22
-22 ÷ 921 = -0.023887079261672096
-0.023887079261672096 x 100 = -2.39%