-5.21% is the change from 921 to 873
Calculation steps:
[( 873 - 921 ) ÷ 921] x 100 = -5.21%
Formula
Percentage change = [(873 - 921) / 921] x 100
Subtract the new number by the original number
873 - 921 = -48
-48 ÷ 921 = -0.05211726384364821
-0.05211726384364821 x 100 = -5.21%