-96.6% is the change from 971 to 33
Calculation steps:
[( 33 - 971 ) ÷ 971] x 100 = -96.6%
Formula
Percentage change = [(33 - 971) / 971] x 100
Subtract the new number by the original number
33 - 971 = -938
-938 ÷ 971 = -0.9660144181256437
-0.9660144181256437 x 100 = -96.6%