50.9% is the change from 389 to 587
Calculation steps:
[( 587 - 389 ) ÷ 389] x 100 = 50.9%
Formula
Percentage change = [(587 - 389) / 389] x 100
Subtract the new number by the original number
587 - 389 = 198
198 ÷ 389 = 0.5089974293059126
0.5089974293059126 x 100 = 50.9%