-3.13% is the change from 830 to 804
Calculation steps:
[( 804 - 830 ) ÷ 830] x 100 = -3.13%
Formula
Percentage change = [(804 - 830) / 830] x 100
Subtract the new number by the original number
804 - 830 = -26
-26 ÷ 830 = -0.03132530120481928
-0.03132530120481928 x 100 = -3.13%