2700% is the change from 12 to 336
Calculation steps:
[( 336 - 12 ) ÷ 12] x 100 = 2700%
Formula
Percentage change = [(336 - 12) / 12] x 100
Subtract the new number by the original number
336 - 12 = 324
324 ÷ 12 = 27
27 x 100 = 2700%
Example