-69.26% is the change from 231 to 71
Calculation steps:
[( 71 - 231 ) ÷ 231] x 100 = -69.26%
Formula
Percentage change = [(71 - 231) / 231] x 100
Subtract the new number by the original number
71 - 231 = -160
-160 ÷ 231 = -0.6926406926406926
-0.6926406926406926 x 100 = -69.26%