2650% is the change from 12 to 330
Calculation steps:
[( 330 - 12 ) ÷ 12] x 100 = 2650%
Formula
Percentage change = [(330 - 12) / 12] x 100
Subtract the new number by the original number
330 - 12 = 318
318 ÷ 12 = 26.5
26.5 x 100 = 2650%
Example