1100% is the change from 28 to 336
Calculation steps:
[( 336 - 28 ) ÷ 28] x 100 = 1100%
Formula
Percentage change = [(336 - 28) / 28] x 100
Subtract the new number by the original number
336 - 28 = 308
308 ÷ 28 = 11
11 x 100 = 1100%
Example