1860% is the change from 15 to 294
Calculation steps:
[( 294 - 15 ) ÷ 15] x 100 = 1860%
Formula
Percentage change = [(294 - 15) / 15] x 100
Subtract the new number by the original number
294 - 15 = 279
279 ÷ 15 = 18.6
18.6 x 100 = 1860%
Example