-82.58% is the change from 511 to 89
Calculation steps:
[( 89 - 511 ) ÷ 511] x 100 = -82.58%
Formula
Percentage change = [(89 - 511) / 511] x 100
Subtract the new number by the original number
89 - 511 = -422
-422 ÷ 511 = -0.8258317025440313
-0.8258317025440313 x 100 = -82.58%