1753.33% is the change from 15 to 278
Calculation steps:
[( 278 - 15 ) ÷ 15] x 100 = 1753.33%
Formula
Percentage change = [(278 - 15) / 15] x 100
Subtract the new number by the original number
278 - 15 = 263
263 ÷ 15 = 17.533333333333335
17.533333333333335 x 100 = 1753.33%