2950% is the change from 12 to 366
Calculation steps:
[( 366 - 12 ) ÷ 12] x 100 = 2950%
Formula
Percentage change = [(366 - 12) / 12] x 100
Subtract the new number by the original number
366 - 12 = 354
354 ÷ 12 = 29.5
29.5 x 100 = 2950%
Example