646.51% is the change from 43 to 321
Calculation steps:
[( 321 - 43 ) ÷ 43] x 100 = 646.51%
Formula
Percentage change = [(321 - 43) / 43] x 100
Subtract the new number by the original number
321 - 43 = 278
278 ÷ 43 = 6.465116279069767
6.465116279069767 x 100 = 646.51%