4485.71% is the change from 7 to 321
Calculation steps:
[( 321 - 7 ) ÷ 7] x 100 = 4485.71%
Formula
Percentage change = [(321 - 7) / 7] x 100
Subtract the new number by the original number
321 - 7 = 314
314 ÷ 7 = 44.857142857142854
44.857142857142854 x 100 = 4485.71%