1620% is the change from 15 to 258
Calculation steps:
[( 258 - 15 ) ÷ 15] x 100 = 1620%
Formula
Percentage change = [(258 - 15) / 15] x 100
Subtract the new number by the original number
258 - 15 = 243
243 ÷ 15 = 16.2
16.2 x 100 = 1620%
Example