-96.57% is the change from 845 to 29
Calculation steps:
[( 29 - 845 ) ÷ 845] x 100 = -96.57%
Formula
Percentage change = [(29 - 845) / 845] x 100
Subtract the new number by the original number
29 - 845 = -816
-816 ÷ 845 = -0.9656804733727811
-0.9656804733727811 x 100 = -96.57%