307.41% is the change from 189 to 770
Calculation steps:
[( 770 - 189 ) ÷ 189] x 100 = 307.41%
Formula
Percentage change = [(770 - 189) / 189] x 100
Subtract the new number by the original number
770 - 189 = 581
581 ÷ 189 = 3.074074074074074
3.074074074074074 x 100 = 307.41%