1540% is the change from 15 to 246
Calculation steps:
[( 246 - 15 ) ÷ 15] x 100 = 1540%
Formula
Percentage change = [(246 - 15) / 15] x 100
Subtract the new number by the original number
246 - 15 = 231
231 ÷ 15 = 15.4
15.4 x 100 = 1540%
Example