1538% is the change from 50 to 819
Calculation steps:
[( 819 - 50 ) ÷ 50] x 100 = 1538%
Formula
Percentage change = [(819 - 50) / 50] x 100
Subtract the new number by the original number
819 - 50 = 769
769 ÷ 50 = 15.38
15.38 x 100 = 1538%
Example