2713.33% is the change from 15 to 422
Calculation steps:
[( 422 - 15 ) ÷ 15] x 100 = 2713.33%
Formula
Percentage change = [(422 - 15) / 15] x 100
Subtract the new number by the original number
422 - 15 = 407
407 ÷ 15 = 27.133333333333333
27.133333333333333 x 100 = 2713.33%