-9.13% is the change from 997 to 906
Calculation steps:
[( 906 - 997 ) ÷ 997] x 100 = -9.13%
Formula
Percentage change = [(906 - 997) / 997] x 100
Subtract the new number by the original number
906 - 997 = -91
-91 ÷ 997 = -0.09127382146439318
-0.09127382146439318 x 100 = -9.13%