-85.61% is the change from 959 to 138
Calculation steps:
[( 138 - 959 ) ÷ 959] x 100 = -85.61%
Formula
Percentage change = [(138 - 959) / 959] x 100
Subtract the new number by the original number
138 - 959 = -821
-821 ÷ 959 = -0.8561001042752867
-0.8561001042752867 x 100 = -85.61%