5260% is the change from 15 to 804
Calculation steps:
[( 804 - 15 ) ÷ 15] x 100 = 5260%
Formula
Percentage change = [(804 - 15) / 15] x 100
Subtract the new number by the original number
804 - 15 = 789
789 ÷ 15 = 52.6
52.6 x 100 = 5260%
Example