78.39% is the change from 310 to 553
Calculation steps:
[( 553 - 310 ) ÷ 310] x 100 = 78.39%
Formula
Percentage change = [(553 - 310) / 310] x 100
Subtract the new number by the original number
553 - 310 = 243
243 ÷ 310 = 0.7838709677419354
0.7838709677419354 x 100 = 78.39%