520% is the change from 15 to 93
Calculation steps:
[( 93 - 15 ) ÷ 15] x 100 = 520%
Formula
Percentage change = [(93 - 15) / 15] x 100
Subtract the new number by the original number
93 - 15 = 78
78 ÷ 15 = 5.2
5.2 x 100 = 520%
Example