-91.94% is the change from 992 to 80
Calculation steps:
[( 80 - 992 ) ÷ 992] x 100 = -91.94%
Formula
Percentage change = [(80 - 992) / 992] x 100
Subtract the new number by the original number
80 - 992 = -912
-912 ÷ 992 = -0.9193548387096774
-0.9193548387096774 x 100 = -91.94%