2546.15% is the change from 13 to 344
Calculation steps:
[( 344 - 13 ) ÷ 13] x 100 = 2546.15%
Formula
Percentage change = [(344 - 13) / 13] x 100
Subtract the new number by the original number
344 - 13 = 331
331 ÷ 13 = 25.46153846153846
25.46153846153846 x 100 = 2546.15%