5520% is the change from 15 to 843
Calculation steps:
[( 843 - 15 ) ÷ 15] x 100 = 5520%
Formula
Percentage change = [(843 - 15) / 15] x 100
Subtract the new number by the original number
843 - 15 = 828
828 ÷ 15 = 55.2
55.2 x 100 = 5520%
Example