-92.5% is the change from 80 to 6
Calculation steps:
[( 6 - 80 ) ÷ 80] x 100 = -92.5%
Formula
Percentage change = [(6 - 80) / 80] x 100
Subtract the new number by the original number
6 - 80 = -74
-74 ÷ 80 = -0.925
-0.925 x 100 = -92.5%
Example