756% is the change from 50 to 428
Calculation steps:
[( 428 - 50 ) ÷ 50] x 100 = 756%
Formula
Percentage change = [(428 - 50) / 50] x 100
Subtract the new number by the original number
428 - 50 = 378
378 ÷ 50 = 7.56
7.56 x 100 = 756%
Example