1669.23% is the change from 39 to 690
Calculation steps:
[( 690 - 39 ) ÷ 39] x 100 = 1669.23%
Formula
Percentage change = [(690 - 39) / 39] x 100
Subtract the new number by the original number
690 - 39 = 651
651 ÷ 39 = 16.692307692307693
16.692307692307693 x 100 = 1669.23%