-42.38% is the change from 512 to 295
Calculation steps:
[( 295 - 512 ) ÷ 512] x 100 = -42.38%
Formula
Percentage change = [(295 - 512) / 512] x 100
Subtract the new number by the original number
295 - 512 = -217
-217 ÷ 512 = -0.423828125
-0.423828125 x 100 = -42.38%