-29.3% is the change from 355 to 251
Calculation steps:
[( 251 - 355 ) ÷ 355] x 100 = -29.3%
Formula
Percentage change = [(251 - 355) / 355] x 100
Subtract the new number by the original number
251 - 355 = -104
-104 ÷ 355 = -0.29295774647887324
-0.29295774647887324 x 100 = -29.3%