27800% is the change from 1 to 279
Calculation steps:
[( 279 - 1 ) ÷ 1] x 100 = 27800%
Formula
Percentage change = [(279 - 1) / 1] x 100
Subtract the new number by the original number
279 - 1 = 278
278 ÷ 1 = 278
278 x 100 = 27800%
Example