1046.43% is the change from 28 to 321
Calculation steps:
[( 321 - 28 ) ÷ 28] x 100 = 1046.43%
Formula
Percentage change = [(321 - 28) / 28] x 100
Subtract the new number by the original number
321 - 28 = 293
293 ÷ 28 = 10.464285714285714
10.464285714285714 x 100 = 1046.43%