389.61% is the change from 77 to 377
Calculation steps:
[( 377 - 77 ) ÷ 77] x 100 = 389.61%
Formula
Percentage change = [(377 - 77) / 77] x 100
Subtract the new number by the original number
377 - 77 = 300
300 ÷ 77 = 3.896103896103896
3.896103896103896 x 100 = 389.61%