82.35% is the change from 306 to 558
Calculation steps:
[( 558 - 306 ) ÷ 306] x 100 = 82.35%
Formula
Percentage change = [(558 - 306) / 306] x 100
Subtract the new number by the original number
558 - 306 = 252
252 ÷ 306 = 0.8235294117647058
0.8235294117647058 x 100 = 82.35%