-34.35% is the change from 393 to 258
Calculation steps:
[( 258 - 393 ) ÷ 393] x 100 = -34.35%
Formula
Percentage change = [(258 - 393) / 393] x 100
Subtract the new number by the original number
258 - 393 = -135
-135 ÷ 393 = -0.3435114503816794
-0.3435114503816794 x 100 = -34.35%