123.19% is the change from 345 to 770
Calculation steps:
[( 770 - 345 ) ÷ 345] x 100 = 123.19%
Formula
Percentage change = [(770 - 345) / 345] x 100
Subtract the new number by the original number
770 - 345 = 425
425 ÷ 345 = 1.2318840579710144
1.2318840579710144 x 100 = 123.19%