-84.05% is the change from 972 to 155
Calculation steps:
[( 155 - 972 ) ÷ 972] x 100 = -84.05%
Formula
Percentage change = [(155 - 972) / 972] x 100
Subtract the new number by the original number
155 - 972 = -817
-817 ÷ 972 = -0.8405349794238683
-0.8405349794238683 x 100 = -84.05%