-10.66% is the change from 929 to 830
Calculation steps:
[( 830 - 929 ) ÷ 929] x 100 = -10.66%
Formula
Percentage change = [(830 - 929) / 929] x 100
Subtract the new number by the original number
830 - 929 = -99
-99 ÷ 929 = -0.10656620021528525
-0.10656620021528525 x 100 = -10.66%