-22.91% is the change from 825 to 636
Calculation steps:
[( 636 - 825 ) ÷ 825] x 100 = -22.91%
Formula
Percentage change = [(636 - 825) / 825] x 100
Subtract the new number by the original number
636 - 825 = -189
-189 ÷ 825 = -0.2290909090909091
-0.2290909090909091 x 100 = -22.91%