1300% is the change from 28 to 392
Calculation steps:
[( 392 - 28 ) ÷ 28] x 100 = 1300%
Formula
Percentage change = [(392 - 28) / 28] x 100
Subtract the new number by the original number
392 - 28 = 364
364 ÷ 28 = 13
13 x 100 = 1300%
Example