-72.85% is the change from 512 to 139
Calculation steps:
[( 139 - 512 ) ÷ 512] x 100 = -72.85%
Formula
Percentage change = [(139 - 512) / 512] x 100
Subtract the new number by the original number
139 - 512 = -373
-373 ÷ 512 = -0.728515625
-0.728515625 x 100 = -72.85%