79.03% is the change from 310 to 555
Calculation steps:
[( 555 - 310 ) ÷ 310] x 100 = 79.03%
Formula
Percentage change = [(555 - 310) / 310] x 100
Subtract the new number by the original number
555 - 310 = 245
245 ÷ 310 = 0.7903225806451613
0.7903225806451613 x 100 = 79.03%