-12.41% is the change from 959 to 840
Calculation steps:
[( 840 - 959 ) ÷ 959] x 100 = -12.41%
Formula
Percentage change = [(840 - 959) / 959] x 100
Subtract the new number by the original number
840 - 959 = -119
-119 ÷ 959 = -0.12408759124087591
-0.12408759124087591 x 100 = -12.41%