-91.6% is the change from 512 to 43
Calculation steps:
[( 43 - 512 ) ÷ 512] x 100 = -91.6%
Formula
Percentage change = [(43 - 512) / 512] x 100
Subtract the new number by the original number
43 - 512 = -469
-469 ÷ 512 = -0.916015625
-0.916015625 x 100 = -91.6%