-97.29% is the change from 258 to 7
Calculation steps:
[( 7 - 258 ) ÷ 258] x 100 = -97.29%
Formula
Percentage change = [(7 - 258) / 258] x 100
Subtract the new number by the original number
7 - 258 = -251
-251 ÷ 258 = -0.9728682170542635
-0.9728682170542635 x 100 = -97.29%