-15.96% is the change from 971 to 816
Calculation steps:
[( 816 - 971 ) ÷ 971] x 100 = -15.96%
Formula
Percentage change = [(816 - 971) / 971] x 100
Subtract the new number by the original number
816 - 971 = -155
-155 ÷ 971 = -0.1596292481977343
-0.1596292481977343 x 100 = -15.96%