5550% is the change from 12 to 678
Calculation steps:
[( 678 - 12 ) ÷ 12] x 100 = 5550%
Formula
Percentage change = [(678 - 12) / 12] x 100
Subtract the new number by the original number
678 - 12 = 666
666 ÷ 12 = 55.5
55.5 x 100 = 5550%
Example