-10.84% is the change from 830 to 740
Calculation steps:
[( 740 - 830 ) ÷ 830] x 100 = -10.84%
Formula
Percentage change = [(740 - 830) / 830] x 100
Subtract the new number by the original number
740 - 830 = -90
-90 ÷ 830 = -0.10843373493975904
-0.10843373493975904 x 100 = -10.84%