-23.65% is the change from 833 to 636
Calculation steps:
[( 636 - 833 ) ÷ 833] x 100 = -23.65%
Formula
Percentage change = [(636 - 833) / 833] x 100
Subtract the new number by the original number
636 - 833 = -197
-197 ÷ 833 = -0.23649459783913565
-0.23649459783913565 x 100 = -23.65%