-79.1% is the change from 512 to 107
Calculation steps:
[( 107 - 512 ) ÷ 512] x 100 = -79.1%
Formula
Percentage change = [(107 - 512) / 512] x 100
Subtract the new number by the original number
107 - 512 = -405
-405 ÷ 512 = -0.791015625
-0.791015625 x 100 = -79.1%