748% is the change from 50 to 424
Calculation steps:
[( 424 - 50 ) ÷ 50] x 100 = 748%
Formula
Percentage change = [(424 - 50) / 50] x 100
Subtract the new number by the original number
424 - 50 = 374
374 ÷ 50 = 7.48
7.48 x 100 = 748%
Example