-10.08% is the change from 923 to 830
Calculation steps:
[( 830 - 923 ) ÷ 923] x 100 = -10.08%
Formula
Percentage change = [(830 - 923) / 923] x 100
Subtract the new number by the original number
830 - 923 = -93
-93 ÷ 923 = -0.10075839653304441
-0.10075839653304441 x 100 = -10.08%