-62.34% is the change from 231 to 87
Calculation steps:
[( 87 - 231 ) ÷ 231] x 100 = -62.34%
Formula
Percentage change = [(87 - 231) / 231] x 100
Subtract the new number by the original number
87 - 231 = -144
-144 ÷ 231 = -0.6233766233766234
-0.6233766233766234 x 100 = -62.34%