1760% is the change from 15 to 279
Calculation steps:
[( 279 - 15 ) ÷ 15] x 100 = 1760%
Formula
Percentage change = [(279 - 15) / 15] x 100
Subtract the new number by the original number
279 - 15 = 264
264 ÷ 15 = 17.6
17.6 x 100 = 1760%
Example