-3.31% is the change from 997 to 964
Calculation steps:
[( 964 - 997 ) ÷ 997] x 100 = -3.31%
Formula
Percentage change = [(964 - 997) / 997] x 100
Subtract the new number by the original number
964 - 997 = -33
-33 ÷ 997 = -0.033099297893681046
-0.033099297893681046 x 100 = -3.31%