2160% is the change from 30 to 678
Calculation steps:
[( 678 - 30 ) ÷ 30] x 100 = 2160%
Formula
Percentage change = [(678 - 30) / 30] x 100
Subtract the new number by the original number
678 - 30 = 648
648 ÷ 30 = 21.6
21.6 x 100 = 2160%
Example