778% is the change from 50 to 439
Calculation steps:
[( 439 - 50 ) ÷ 50] x 100 = 778%
Formula
Percentage change = [(439 - 50) / 50] x 100
Subtract the new number by the original number
439 - 50 = 389
389 ÷ 50 = 7.78
7.78 x 100 = 778%
Example