24.84% is the change from 310 to 387
Calculation steps:
[( 387 - 310 ) ÷ 310] x 100 = 24.84%
Formula
Percentage change = [(387 - 310) / 310] x 100
Subtract the new number by the original number
387 - 310 = 77
77 ÷ 310 = 0.24838709677419354
0.24838709677419354 x 100 = 24.84%