-87.45% is the change from 231 to 29
Calculation steps:
[( 29 - 231 ) ÷ 231] x 100 = -87.45%
Formula
Percentage change = [(29 - 231) / 231] x 100
Subtract the new number by the original number
29 - 231 = -202
-202 ÷ 231 = -0.8744588744588745
-0.8744588744588745 x 100 = -87.45%