-91.02% is the change from 512 to 46
Calculation steps:
[( 46 - 512 ) ÷ 512] x 100 = -91.02%
Formula
Percentage change = [(46 - 512) / 512] x 100
Subtract the new number by the original number
46 - 512 = -466
-466 ÷ 512 = -0.91015625
-0.91015625 x 100 = -91.02%