575% is the change from 12 to 81
Calculation steps:
[( 81 - 12 ) ÷ 12] x 100 = 575%
Formula
Percentage change = [(81 - 12) / 12] x 100
Subtract the new number by the original number
81 - 12 = 69
69 ÷ 12 = 5.75
5.75 x 100 = 575%
Example