2173.33% is the change from 15 to 341
Calculation steps:
[( 341 - 15 ) ÷ 15] x 100 = 2173.33%
Formula
Percentage change = [(341 - 15) / 15] x 100
Subtract the new number by the original number
341 - 15 = 326
326 ÷ 15 = 21.733333333333334
21.733333333333334 x 100 = 2173.33%