31.27% is the change from 387 to 508
Calculation steps:
[( 508 - 387 ) ÷ 387] x 100 = 31.27%
Formula
Percentage change = [(508 - 387) / 387] x 100
Subtract the new number by the original number
508 - 387 = 121
121 ÷ 387 = 0.31266149870801035
0.31266149870801035 x 100 = 31.27%