-0.99% is the change from 912 to 903
Calculation steps:
[( 903 - 912 ) ÷ 912] x 100 = -0.99%
Formula
Percentage change = [(903 - 912) / 912] x 100
Subtract the new number by the original number
903 - 912 = -9
-9 ÷ 912 = -0.009868421052631578
-0.009868421052631578 x 100 = -0.99%