-19.39% is the change from 789 to 636
Calculation steps:
[( 636 - 789 ) ÷ 789] x 100 = -19.39%
Formula
Percentage change = [(636 - 789) / 789] x 100
Subtract the new number by the original number
636 - 789 = -153
-153 ÷ 789 = -0.19391634980988592
-0.19391634980988592 x 100 = -19.39%