1600% is the change from 12 to 204
Calculation steps:
[( 204 - 12 ) ÷ 12] x 100 = 1600%
Formula
Percentage change = [(204 - 12) / 12] x 100
Subtract the new number by the original number
204 - 12 = 192
192 ÷ 12 = 16
16 x 100 = 1600%
Example