70.72% is the change from 321 to 548
Calculation steps:
[( 548 - 321 ) ÷ 321] x 100 = 70.72%
Formula
Percentage change = [(548 - 321) / 321] x 100
Subtract the new number by the original number
548 - 321 = 227
227 ÷ 321 = 0.7071651090342679
0.7071651090342679 x 100 = 70.72%