-8.02% is the change from 349 to 321
Calculation steps:
[( 321 - 349 ) ÷ 349] x 100 = -8.02%
Formula
Percentage change = [(321 - 349) / 349] x 100
Subtract the new number by the original number
321 - 349 = -28
-28 ÷ 349 = -0.08022922636103152
-0.08022922636103152 x 100 = -8.02%