-15.84% is the change from 966 to 813
Calculation steps:
[( 813 - 966 ) ÷ 966] x 100 = -15.84%
Formula
Percentage change = [(813 - 966) / 966] x 100
Subtract the new number by the original number
813 - 966 = -153
-153 ÷ 966 = -0.15838509316770186
-0.15838509316770186 x 100 = -15.84%