-0.84% is the change from 837 to 830
Calculation steps:
[( 830 - 837 ) ÷ 837] x 100 = -0.84%
Formula
Percentage change = [(830 - 837) / 837] x 100
Subtract the new number by the original number
830 - 837 = -7
-7 ÷ 837 = -0.008363201911589008
-0.008363201911589008 x 100 = -0.84%