-99.51% is the change from 611 to 3
Calculation steps:
[( 3 - 611 ) ÷ 611] x 100 = -99.51%
Formula
Percentage change = [(3 - 611) / 611] x 100
Subtract the new number by the original number
3 - 611 = -608
-608 ÷ 611 = -0.9950900163666121
-0.9950900163666121 x 100 = -99.51%