-84.2% is the change from 981 to 155
Calculation steps:
[( 155 - 981 ) ÷ 981] x 100 = -84.2%
Formula
Percentage change = [(155 - 981) / 981] x 100
Subtract the new number by the original number
155 - 981 = -826
-826 ÷ 981 = -0.8419979612640163
-0.8419979612640163 x 100 = -84.2%