407.79% is the change from 77 to 391
Calculation steps:
[( 391 - 77 ) ÷ 77] x 100 = 407.79%
Formula
Percentage change = [(391 - 77) / 77] x 100
Subtract the new number by the original number
391 - 77 = 314
314 ÷ 77 = 4.077922077922078
4.077922077922078 x 100 = 407.79%