696% is the change from 50 to 398
Calculation steps:
[( 398 - 50 ) ÷ 50] x 100 = 696%
Formula
Percentage change = [(398 - 50) / 50] x 100
Subtract the new number by the original number
398 - 50 = 348
348 ÷ 50 = 6.96
6.96 x 100 = 696%
Example