-3.6% is the change from 971 to 936
Calculation steps:
[( 936 - 971 ) ÷ 971] x 100 = -3.6%
Formula
Percentage change = [(936 - 971) / 971] x 100
Subtract the new number by the original number
936 - 971 = -35
-35 ÷ 971 = -0.03604531410916581
-0.03604531410916581 x 100 = -3.6%