-98.01% is the change from 402 to 8
Calculation steps:
[( 8 - 402 ) ÷ 402] x 100 = -98.01%
Formula
Percentage change = [(8 - 402) / 402] x 100
Subtract the new number by the original number
8 - 402 = -394
-394 ÷ 402 = -0.9800995024875622
-0.9800995024875622 x 100 = -98.01%