103.1% is the change from 387 to 786
Calculation steps:
[( 786 - 387 ) ÷ 387] x 100 = 103.1%
Formula
Percentage change = [(786 - 387) / 387] x 100
Subtract the new number by the original number
786 - 387 = 399
399 ÷ 387 = 1.0310077519379846
1.0310077519379846 x 100 = 103.1%