5250% is the change from 6 to 321
Calculation steps:
[( 321 - 6 ) ÷ 6] x 100 = 5250%
Formula
Percentage change = [(321 - 6) / 6] x 100
Subtract the new number by the original number
321 - 6 = 315
315 ÷ 6 = 52.5
52.5 x 100 = 5250%
Example