12000% is the change from 1 to 121
Calculation steps:
[( 121 - 1 ) ÷ 1] x 100 = 12000%
Formula
Percentage change = [(121 - 1) / 1] x 100
Subtract the new number by the original number
121 - 1 = 120
120 ÷ 1 = 120
120 x 100 = 12000%
Example