79.35% is the change from 310 to 556
Calculation steps:
[( 556 - 310 ) ÷ 310] x 100 = 79.35%
Formula
Percentage change = [(556 - 310) / 310] x 100
Subtract the new number by the original number
556 - 310 = 246
246 ÷ 310 = 0.7935483870967742
0.7935483870967742 x 100 = 79.35%