1680% is the change from 15 to 267
Calculation steps:
[( 267 - 15 ) ÷ 15] x 100 = 1680%
Formula
Percentage change = [(267 - 15) / 15] x 100
Subtract the new number by the original number
267 - 15 = 252
252 ÷ 15 = 16.8
16.8 x 100 = 1680%
Example