2175% is the change from 12 to 273
Calculation steps:
[( 273 - 12 ) ÷ 12] x 100 = 2175%
Formula
Percentage change = [(273 - 12) / 12] x 100
Subtract the new number by the original number
273 - 12 = 261
261 ÷ 12 = 21.75
21.75 x 100 = 2175%
Example