-95.12% is the change from 512 to 25
Calculation steps:
[( 25 - 512 ) ÷ 512] x 100 = -95.12%
Formula
Percentage change = [(25 - 512) / 512] x 100
Subtract the new number by the original number
25 - 512 = -487
-487 ÷ 512 = -0.951171875
-0.951171875 x 100 = -95.12%