-99.79% is the change from 971 to 2
Calculation steps:
[( 2 - 971 ) ÷ 971] x 100 = -99.79%
Formula
Percentage change = [(2 - 971) / 971] x 100
Subtract the new number by the original number
2 - 971 = -969
-969 ÷ 971 = -0.9979402677651905
-0.9979402677651905 x 100 = -99.79%