-16.27% is the change from 971 to 813
Calculation steps:
[( 813 - 971 ) ÷ 971] x 100 = -16.27%
Formula
Percentage change = [(813 - 971) / 971] x 100
Subtract the new number by the original number
813 - 971 = -158
-158 ÷ 971 = -0.1627188465499485
-0.1627188465499485 x 100 = -16.27%