676% is the change from 50 to 388
Calculation steps:
[( 388 - 50 ) ÷ 50] x 100 = 676%
Formula
Percentage change = [(388 - 50) / 50] x 100
Subtract the new number by the original number
388 - 50 = 338
338 ÷ 50 = 6.76
6.76 x 100 = 676%
Example