-0.31% is the change from 323 to 322
Calculation steps:
[( 322 - 323 ) ÷ 323] x 100 = -0.31%
Formula
Percentage change = [(322 - 323) / 323] x 100
Subtract the new number by the original number
322 - 323 = -1
-1 ÷ 323 = -0.0030959752321981426
-0.0030959752321981426 x 100 = -0.31%