4420% is the change from 15 to 678
Calculation steps:
[( 678 - 15 ) ÷ 15] x 100 = 4420%
Formula
Percentage change = [(678 - 15) / 15] x 100
Subtract the new number by the original number
678 - 15 = 663
663 ÷ 15 = 44.2
44.2 x 100 = 4420%
Example