-89.87% is the change from 79 to 8
Calculation steps:
[( 8 - 79 ) ÷ 79] x 100 = -89.87%
Formula
Percentage change = [(8 - 79) / 79] x 100
Subtract the new number by the original number
8 - 79 = -71
-71 ÷ 79 = -0.8987341772151899
-0.8987341772151899 x 100 = -89.87%