-80.82% is the change from 511 to 98
Calculation steps:
[( 98 - 511 ) ÷ 511] x 100 = -80.82%
Formula
Percentage change = [(98 - 511) / 511] x 100
Subtract the new number by the original number
98 - 511 = -413
-413 ÷ 511 = -0.8082191780821918
-0.8082191780821918 x 100 = -80.82%