-10.21% is the change from 999 to 897
Calculation steps:
[( 897 - 999 ) ÷ 999] x 100 = -10.21%
Formula
Percentage change = [(897 - 999) / 999] x 100
Subtract the new number by the original number
897 - 999 = -102
-102 ÷ 999 = -0.1021021021021021
-0.1021021021021021 x 100 = -10.21%