2325% is the change from 12 to 291
Calculation steps:
[( 291 - 12 ) ÷ 12] x 100 = 2325%
Formula
Percentage change = [(291 - 12) / 12] x 100
Subtract the new number by the original number
291 - 12 = 279
279 ÷ 12 = 23.25
23.25 x 100 = 2325%
Example