1150% is the change from 12 to 150
Calculation steps:
[( 150 - 12 ) ÷ 12] x 100 = 1150%
Formula
Percentage change = [(150 - 12) / 12] x 100
Subtract the new number by the original number
150 - 12 = 138
138 ÷ 12 = 11.5
11.5 x 100 = 1150%
Example