-12.96% is the change from 355 to 309
Calculation steps:
[( 309 - 355 ) ÷ 355] x 100 = -12.96%
Formula
Percentage change = [(309 - 355) / 355] x 100
Subtract the new number by the original number
309 - 355 = -46
-46 ÷ 355 = -0.1295774647887324
-0.1295774647887324 x 100 = -12.96%