1556% is the change from 50 to 828
Calculation steps:
[( 828 - 50 ) ÷ 50] x 100 = 1556%
Formula
Percentage change = [(828 - 50) / 50] x 100
Subtract the new number by the original number
828 - 50 = 778
778 ÷ 50 = 15.56
15.56 x 100 = 1556%
Example