1292.86% is the change from 28 to 390
Calculation steps:
[( 390 - 28 ) ÷ 28] x 100 = 1292.86%
Formula
Percentage change = [(390 - 28) / 28] x 100
Subtract the new number by the original number
390 - 28 = 362
362 ÷ 28 = 12.928571428571429
12.928571428571429 x 100 = 1292.86%