214.71% is the change from 102 to 321
Calculation steps:
[( 321 - 102 ) ÷ 102] x 100 = 214.71%
Formula
Percentage change = [(321 - 102) / 102] x 100
Subtract the new number by the original number
321 - 102 = 219
219 ÷ 102 = 2.1470588235294117
2.1470588235294117 x 100 = 214.71%