-83.73% is the change from 959 to 156
Calculation steps:
[( 156 - 959 ) ÷ 959] x 100 = -83.73%
Formula
Percentage change = [(156 - 959) / 959] x 100
Subtract the new number by the original number
156 - 959 = -803
-803 ÷ 959 = -0.8373305526590198
-0.8373305526590198 x 100 = -83.73%