-89.1% is the change from 266 to 29
Calculation steps:
[( 29 - 266 ) ÷ 266] x 100 = -89.1%
Formula
Percentage change = [(29 - 266) / 266] x 100
Subtract the new number by the original number
29 - 266 = -237
-237 ÷ 266 = -0.8909774436090225
-0.8909774436090225 x 100 = -89.1%