-15.72% is the change from 967 to 815
Calculation steps:
[( 815 - 967 ) ÷ 967] x 100 = -15.72%
Formula
Percentage change = [(815 - 967) / 967] x 100
Subtract the new number by the original number
815 - 967 = -152
-152 ÷ 967 = -0.15718717683557393
-0.15718717683557393 x 100 = -15.72%