30.49% is the change from 387 to 505
Calculation steps:
[( 505 - 387 ) ÷ 387] x 100 = 30.49%
Formula
Percentage change = [(505 - 387) / 387] x 100
Subtract the new number by the original number
505 - 387 = 118
118 ÷ 387 = 0.3049095607235142
0.3049095607235142 x 100 = 30.49%