1660% is the change from 15 to 264
Calculation steps:
[( 264 - 15 ) ÷ 15] x 100 = 1660%
Formula
Percentage change = [(264 - 15) / 15] x 100
Subtract the new number by the original number
264 - 15 = 249
249 ÷ 15 = 16.6
16.6 x 100 = 1660%
Example