-71.68% is the change from 512 to 145
Calculation steps:
[( 145 - 512 ) ÷ 512] x 100 = -71.68%
Formula
Percentage change = [(145 - 512) / 512] x 100
Subtract the new number by the original number
145 - 512 = -367
-367 ÷ 512 = -0.716796875
-0.716796875 x 100 = -71.68%