-23.97% is the change from 876 to 666
Calculation steps:
[( 666 - 876 ) ÷ 876] x 100 = -23.97%
Formula
Percentage change = [(666 - 876) / 876] x 100
Subtract the new number by the original number
666 - 876 = -210
-210 ÷ 876 = -0.23972602739726026
-0.23972602739726026 x 100 = -23.97%