102.1% is the change from 381 to 770
Calculation steps:
[( 770 - 381 ) ÷ 381] x 100 = 102.1%
Formula
Percentage change = [(770 - 381) / 381] x 100
Subtract the new number by the original number
770 - 381 = 389
389 ÷ 381 = 1.020997375328084
1.020997375328084 x 100 = 102.1%