-71.48% is the change from 512 to 146
Calculation steps:
[( 146 - 512 ) ÷ 512] x 100 = -71.48%
Formula
Percentage change = [(146 - 512) / 512] x 100
Subtract the new number by the original number
146 - 512 = -366
-366 ÷ 512 = -0.71484375
-0.71484375 x 100 = -71.48%