33.07% is the change from 387 to 515
Calculation steps:
[( 515 - 387 ) ÷ 387] x 100 = 33.07%
Formula
Percentage change = [(515 - 387) / 387] x 100
Subtract the new number by the original number
515 - 387 = 128
128 ÷ 387 = 0.330749354005168
0.330749354005168 x 100 = 33.07%