-82.2% is the change from 972 to 173
Calculation steps:
[( 173 - 972 ) ÷ 972] x 100 = -82.2%
Formula
Percentage change = [(173 - 972) / 972] x 100
Subtract the new number by the original number
173 - 972 = -799
-799 ÷ 972 = -0.8220164609053497
-0.8220164609053497 x 100 = -82.2%