-24.73% is the change from 845 to 636
Calculation steps:
[( 636 - 845 ) ÷ 845] x 100 = -24.73%
Formula
Percentage change = [(636 - 845) / 845] x 100
Subtract the new number by the original number
636 - 845 = -209
-209 ÷ 845 = -0.24733727810650888
-0.24733727810650888 x 100 = -24.73%