-99.51% is the change from 612 to 3
Calculation steps:
[( 3 - 612 ) ÷ 612] x 100 = -99.51%
Formula
Percentage change = [(3 - 612) / 612] x 100
Subtract the new number by the original number
3 - 612 = -609
-609 ÷ 612 = -0.9950980392156863
-0.9950980392156863 x 100 = -99.51%