1300% is the change from 1 to 14
Calculation steps:
[( 14 - 1 ) ÷ 1] x 100 = 1300%
Formula
Percentage change = [(14 - 1) / 1] x 100
Subtract the new number by the original number
14 - 1 = 13
13 ÷ 1 = 13
13 x 100 = 1300%
Example