1200% is the change from 12 to 156
Calculation steps:
[( 156 - 12 ) ÷ 12] x 100 = 1200%
Formula
Percentage change = [(156 - 12) / 12] x 100
Subtract the new number by the original number
156 - 12 = 144
144 ÷ 12 = 12
12 x 100 = 1200%
Example