-96.97% is the change from 231 to 7
Calculation steps:
[( 7 - 231 ) ÷ 231] x 100 = -96.97%
Formula
Percentage change = [(7 - 231) / 231] x 100
Subtract the new number by the original number
7 - 231 = -224
-224 ÷ 231 = -0.9696969696969697
-0.9696969696969697 x 100 = -96.97%