-2.61% is the change from 921 to 897
Calculation steps:
[( 897 - 921 ) ÷ 921] x 100 = -2.61%
Formula
Percentage change = [(897 - 921) / 921] x 100
Subtract the new number by the original number
897 - 921 = -24
-24 ÷ 921 = -0.026058631921824105
-0.026058631921824105 x 100 = -2.61%