-82.62% is the change from 512 to 89
Calculation steps:
[( 89 - 512 ) ÷ 512] x 100 = -82.62%
Formula
Percentage change = [(89 - 512) / 512] x 100
Subtract the new number by the original number
89 - 512 = -423
-423 ÷ 512 = -0.826171875
-0.826171875 x 100 = -82.62%