-13.15% is the change from 966 to 839
Calculation steps:
[( 839 - 966 ) ÷ 966] x 100 = -13.15%
Formula
Percentage change = [(839 - 966) / 966] x 100
Subtract the new number by the original number
839 - 966 = -127
-127 ÷ 966 = -0.13146997929606624
-0.13146997929606624 x 100 = -13.15%