-82.3% is the change from 972 to 172
Calculation steps:
[( 172 - 972 ) ÷ 972] x 100 = -82.3%
Formula
Percentage change = [(172 - 972) / 972] x 100
Subtract the new number by the original number
172 - 972 = -800
-800 ÷ 972 = -0.823045267489712
-0.823045267489712 x 100 = -82.3%