-6.55% is the change from 351 to 328
Calculation steps:
[( 328 - 351 ) ÷ 351] x 100 = -6.55%
Formula
Percentage change = [(328 - 351) / 351] x 100
Subtract the new number by the original number
328 - 351 = -23
-23 ÷ 351 = -0.06552706552706553
-0.06552706552706553 x 100 = -6.55%