600% is the change from 12 to 84
Calculation steps:
[( 84 - 12 ) ÷ 12] x 100 = 600%
Formula
Percentage change = [(84 - 12) / 12] x 100
Subtract the new number by the original number
84 - 12 = 72
72 ÷ 12 = 6
6 x 100 = 600%
Example