-29.58% is the change from 355 to 250
Calculation steps:
[( 250 - 355 ) ÷ 355] x 100 = -29.58%
Formula
Percentage change = [(250 - 355) / 355] x 100
Subtract the new number by the original number
250 - 355 = -105
-105 ÷ 355 = -0.29577464788732394
-0.29577464788732394 x 100 = -29.58%
Example