-54.1% is the change from 512 to 235
Calculation steps:
[( 235 - 512 ) ÷ 512] x 100 = -54.1%
Formula
Percentage change = [(235 - 512) / 512] x 100
Subtract the new number by the original number
235 - 512 = -277
-277 ÷ 512 = -0.541015625
-0.541015625 x 100 = -54.1%