39.8% is the change from 392 to 548
Calculation steps:
[( 548 - 392 ) ÷ 392] x 100 = 39.8%
Formula
Percentage change = [(548 - 392) / 392] x 100
Subtract the new number by the original number
548 - 392 = 156
156 ÷ 392 = 0.3979591836734694
0.3979591836734694 x 100 = 39.8%