50.38% is the change from 391 to 588
Calculation steps:
[( 588 - 391 ) ÷ 391] x 100 = 50.38%
Formula
Percentage change = [(588 - 391) / 391] x 100
Subtract the new number by the original number
588 - 391 = 197
197 ÷ 391 = 0.5038363171355499
0.5038363171355499 x 100 = 50.38%