-7.23% is the change from 346 to 321
Calculation steps:
[( 321 - 346 ) ÷ 346] x 100 = -7.23%
Formula
Percentage change = [(321 - 346) / 346] x 100
Subtract the new number by the original number
321 - 346 = -25
-25 ÷ 346 = -0.07225433526011561
-0.07225433526011561 x 100 = -7.23%