1600% is the change from 39 to 663
Calculation steps:
[( 663 - 39 ) ÷ 39] x 100 = 1600%
Formula
Percentage change = [(663 - 39) / 39] x 100
Subtract the new number by the original number
663 - 39 = 624
624 ÷ 39 = 16
16 x 100 = 1600%
Example