102.63% is the change from 380 to 770
Calculation steps:
[( 770 - 380 ) ÷ 380] x 100 = 102.63%
Formula
Percentage change = [(770 - 380) / 380] x 100
Subtract the new number by the original number
770 - 380 = 390
390 ÷ 380 = 1.0263157894736843
1.0263157894736843 x 100 = 102.63%