54.79% is the change from 219 to 339
Calculation steps:
[( 339 - 219 ) ÷ 219] x 100 = 54.79%
Formula
Percentage change = [(339 - 219) / 219] x 100
Subtract the new number by the original number
339 - 219 = 120
120 ÷ 219 = 0.547945205479452
0.547945205479452 x 100 = 54.79%