2473.33% is the change from 15 to 386
Calculation steps:
[( 386 - 15 ) ÷ 15] x 100 = 2473.33%
Formula
Percentage change = [(386 - 15) / 15] x 100
Subtract the new number by the original number
386 - 15 = 371
371 ÷ 15 = 24.733333333333334
24.733333333333334 x 100 = 2473.33%