529.41% is the change from 51 to 321
Calculation steps:
[( 321 - 51 ) ÷ 51] x 100 = 529.41%
Formula
Percentage change = [(321 - 51) / 51] x 100
Subtract the new number by the original number
321 - 51 = 270
270 ÷ 51 = 5.294117647058823
5.294117647058823 x 100 = 529.41%