-86.82% is the change from 258 to 34
Calculation steps:
[( 34 - 258 ) ÷ 258] x 100 = -86.82%
Formula
Percentage change = [(34 - 258) / 258] x 100
Subtract the new number by the original number
34 - 258 = -224
-224 ÷ 258 = -0.8682170542635659
-0.8682170542635659 x 100 = -86.82%