-89.86% is the change from 286 to 29
Calculation steps:
[( 29 - 286 ) ÷ 286] x 100 = -89.86%
Formula
Percentage change = [(29 - 286) / 286] x 100
Subtract the new number by the original number
29 - 286 = -257
-257 ÷ 286 = -0.8986013986013986
-0.8986013986013986 x 100 = -89.86%