-79.65% is the change from 511 to 104
Calculation steps:
[( 104 - 511 ) ÷ 511] x 100 = -79.65%
Formula
Percentage change = [(104 - 511) / 511] x 100
Subtract the new number by the original number
104 - 511 = -407
-407 ÷ 511 = -0.7964774951076321
-0.7964774951076321 x 100 = -79.65%