-99.74% is the change from 771 to 2
Calculation steps:
[( 2 - 771 ) ÷ 771] x 100 = -99.74%
Formula
Percentage change = [(2 - 771) / 771] x 100
Subtract the new number by the original number
2 - 771 = -769
-769 ÷ 771 = -0.9974059662775616
-0.9974059662775616 x 100 = -99.74%