-19.6% is the change from 791 to 636
Calculation steps:
[( 636 - 791 ) ÷ 791] x 100 = -19.6%
Formula
Percentage change = [(636 - 791) / 791] x 100
Subtract the new number by the original number
636 - 791 = -155
-155 ÷ 791 = -0.1959544879898862
-0.1959544879898862 x 100 = -19.6%