-99.67% is the change from 611 to 2
Calculation steps:
[( 2 - 611 ) ÷ 611] x 100 = -99.67%
Formula
Percentage change = [(2 - 611) / 611] x 100
Subtract the new number by the original number
2 - 611 = -609
-609 ÷ 611 = -0.9967266775777414
-0.9967266775777414 x 100 = -99.67%