49.1% is the change from 391 to 583
Calculation steps:
[( 583 - 391 ) ÷ 391] x 100 = 49.1%
Formula
Percentage change = [(583 - 391) / 391] x 100
Subtract the new number by the original number
583 - 391 = 192
192 ÷ 391 = 0.49104859335038364
0.49104859335038364 x 100 = 49.1%