-16.48% is the change from 971 to 811
Calculation steps:
[( 811 - 971 ) ÷ 971] x 100 = -16.48%
Formula
Percentage change = [(811 - 971) / 971] x 100
Subtract the new number by the original number
811 - 971 = -160
-160 ÷ 971 = -0.164778578784758
-0.164778578784758 x 100 = -16.48%