5320% is the change from 15 to 813
Calculation steps:
[( 813 - 15 ) ÷ 15] x 100 = 5320%
Formula
Percentage change = [(813 - 15) / 15] x 100
Subtract the new number by the original number
813 - 15 = 798
798 ÷ 15 = 53.2
53.2 x 100 = 5320%
Example