-92% is the change from 100 to 8
Calculation steps:
[( 8 - 100 ) ÷ 100] x 100 = -92%
Formula
Percentage change = [(8 - 100) / 100] x 100
Subtract the new number by the original number
8 - 100 = -92
-92 ÷ 100 = -0.92
-0.92 x 100 = -92%
Example