379.1% is the change from 67 to 321
Calculation steps:
[( 321 - 67 ) ÷ 67] x 100 = 379.1%
Formula
Percentage change = [(321 - 67) / 67] x 100
Subtract the new number by the original number
321 - 67 = 254
254 ÷ 67 = 3.791044776119403
3.791044776119403 x 100 = 379.1%