-2.1% is the change from 809 to 792
Calculation steps:
[( 792 - 809 ) ÷ 809] x 100 = -2.1%
Formula
Percentage change = [(792 - 809) / 809] x 100
Subtract the new number by the original number
792 - 809 = -17
-17 ÷ 809 = -0.021013597033374538
-0.021013597033374538 x 100 = -2.1%