-82.66% is the change from 992 to 172
Calculation steps:
[( 172 - 992 ) ÷ 992] x 100 = -82.66%
Formula
Percentage change = [(172 - 992) / 992] x 100
Subtract the new number by the original number
172 - 992 = -820
-820 ÷ 992 = -0.8266129032258065
-0.8266129032258065 x 100 = -82.66%